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Some Tips To Speed Up Firefox

Written by oneself on 8:50 PM

By: Tim Childree

Mozilla Firefox is an excellent web browser that does a much better job than Internet Explorer when it comes to protecting your privacy and computer security. Unfortunately, Firefox can sometimes be slower than Internet Explorer. The speed difference between the two browsers is one of the main reasons why most people do not change their browser from the quicker yet more vulnerable Internet Explorer to the slower but more secure Firefox browser, the other reason being that Firefox introduces many new features that simply take more time to learn than some users are willing to invest. To get the best of both worlds – speed and security of browsing – you can download Mozilla Firefox and speed it up with these tips.

Pipelining

This tweak is very easy to accomplish. On your Firefox web browser address bar, type about:config, then press Enter. Scroll through the list of values and look for these three crucial pipelining settings: network.http.pipelining, network.http.proxy.pipelining, and network.http.pipelining.maxrequests. You can use the filter to easily find each of these entries.

For the pipelining entry, you should change the value to true. Just double click the false value to make this change. For the maxrequests entry, the default setting is four. Change the value to your desired number. This value determines how many page requests Firefox is capable of making. You can go as high as 8 to speed up your tabbed browsing. Finally, go to proxy.pipelining and change the value from false to true.

Doing the above steps will give you greater browsing speeds by allowing Firefox to process and send requests simultaneously instead of waiting until a response has been received from a previous request. This will also reduce network bottlenecks by packing multiple requests into a single data packet.

Increase Your Firefox Memory Cache

Your computer will automatically allot a memory cache for your Firefox browser. Increasing your browser cache will actually increase the amount of objects that your browser can retain, which cuts down on time spent retrieving information from your hard disk or a web server. As a result, your frequently visited pages will load much faster.

You can modify the cache settings by going to the Firefox tools menu and clicking on Options. From here, click on the “Advanced” tab, then the “Network” tab. On the network tab, you can specify any cache size you like, but it is doubtful you will need more than about 32 Megabytes of cache.

Block Unwanted Advertisements

One of the best ways to speed up Firefox is by using an Ad Removal extension, such as AdBlock Plus. AdBlock Plus can be installed at https://addons.mozilla.org/en-US/firefox/addon/1865, and it works to block annoying banner ads. AdBlock Plus also features a “learning” feature, meaning you can right-click on unblocked ads and set them to be blocked, as well. Even with no other optimizations, Firefox will load most pages much faster than Internet Explorer when using AdBlock Plus, because it does not have to worry about downloading all of the annoying, unwanted ads that clutter up so many webpages.

Another plugin, called FasterFox, implements a large number of tweaks based on increasing the speed of your browsing. FasterFox is available from: https://addons.mozilla.org/en-US/firefox/addon/1269.

With these tips, you can speed up Firefox considerably, so don't let the slow performance you may have experienced deter you any longer. Firefox works to provide a much safer browsing experience than Internet Explorer, and its plugin interface allows for unprecedented levels of customization and convenience.


About the Author:

MALIBAL is the Home of the World's Fastest Laptops! Please, check out these recommendations for the best laptop & notebook computers.


Article Source: www.iSnare.com

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Troubleshooting Your Computer

Written by oneself on 4:10 AM

by roger.

If you’re going to be building computers, adding devices to your computer, altering BIOS settings, or just installing and deleting programs on your computer, then you’ll want to learn the basics of troubleshooting. You might notice that I didn’t say computer troubleshooting. That is because troubleshooting is an independent skill. I learned to troubleshoot as an electronic technician. And most of those same techniques work fine for troubleshooting computers.


Troubleshooting is really a kind of detective work. If you notice, the TV detectives spend a lot of time asking questions and thinking over the facts. And that is where a good troubleshooter starts, asking questions, not with tearing apart their computer, swapping components, or running diagnostics programs.


My intent here isn’t to give you heavy technical troubleshooting instructions, but to provide you with common sense techniques that will likely save you a lot of time and trouble if you follow them.


Take note: I am assuming a basic to intermediate knowledge on the part of the computer user for this article. In other words, that you either build computers or add components to it, like hard drives or CD drives. I also assume you have a basic understanding of the boot process. Finally, I assume you know basic electrical safety rules.


A Typical Scenario


Let’s say one evening you turn on your computer and it starts, seems to boot fine, but stops dead at the point it should start loading Windows. What now? You panic of course. Like most of us you haven’t saved copies of your most important documents for months. And since Windows isn’t loading from the hard drive, you “logically” assume there is a serious problem with the hard drive. It must be physically broken or the data is scrambled.


Since you’re in panic mode you tear the hard drive out of your other working computer and try to boot the first computer. The same thing happens, it stops at the point of loading Windows. What a relief, at least the problem isn’t with the hard drive, your data is safe - there is probably a fault with the motherboard in the first computer.


To make sure, you test the hard drive from your first computer (the one that wouldn’t load Windows) in your second computer, it works fine. That confirms it, there is a problem with the motherboard on the first computer. Probably the hard drive controller, you think, being the expert.

source:www.pcmech.com

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The ROM based Computer

Written by oneself on 8:04 PM

by: Gerry Morgan

In 2007 , 4 out of 5 human beings have yet to touch their first computer.

Networked computers provide a conduit to information, the ‘food’ of the 21 st century. A future without access to knowledge is indeed bleak. Access to information is one of the pre-requisites to sustained economic growth. This is true for families and it is true for nations.

Access to technology is an essential component of positive change. The computer has revolutionized communication, access to information and has made it possible for every person who has access to have an equal opportunity to have their voice heard. Much has been said about technology, but it is only significant to those who have it. It only serves those who have access.

Computing based technologies have come a long way from the days of a young genius in a garage with a big idea. While computers and the software they run have come a long way, there remain many barriers.

These barriers include:

# access to computers/the cost of computers

# access to networks/servers/internet

# access to technology without language barriers

The real cost of computing for the average person is divided almost equally into thirds:

1/3 = the cost of the hardware

1/3 = the cost of the software

1/3 = the cost of specialists to maintain computers.

The PC as we have come to know it means ‘Personal Computer’. It is configured and built for one, not many. The PC was popularized by International Business Machines (IBM) as a solution to office processes. The machine was adapted for personal, home use.

The legacy of the PC functionally means that it must operate from secure power sources, have a powerful processor which requires a fan to cool it. Also needed is a hard drive, lots of RAM, an extensible operating system, video card, audio card, and lots of programs to run in order to make it useful. Today’s machine must also have a screen, keyboard and mouse.

As computers have become more common, the price has dropped and computers have become easier to use and more powerful. There still remain some significant barriers preventing the adoption of computers on a wider scale.

The easiest one to think about is price. Following the model of thirds, if the computer costs $500, Then the real cost of ownership is $1500.00. There are many other problems associated with even low cost computing.

These problems are all too familiar to computer users. They include viruses, trojans, worms, adware and spyware that damage computer usability, fragmentation of hard drives, running out of memory errors, registry problems and incompatibility of all sorts. That fast machine that you thought you bought over time seems more like a tortoise than a hare. All of these, as annoying as they are have a fix…for a price.

The model that we accepted ensures that we are constantly putting money into our computers. This model, for very clear reasons, has not been acceptable to most of the world.

What would Computer Technology look like if we re-invented it today?

The most important part is that the TCO (total cost of ownership) would have to be equal to the cost of a mid-range cell phone. The computer would have to work in any of the major languages of the world. It would have to be tough and capable of working in environments where the power is a bit dodgy. It would have to have a full compliment of software that could access Internet services, operate most multimedia and create files for self expression. In other terms it would have to do everything that 95% of computer users do.

ROM Based Computing

A ROM based computer has no hard drive. The operating system and all the programs are based in ROM (read only memory). The computer can only read from ROM, since it cannot write to ROM infections become virtually impossible. The files that a user makes or the temporary files that the machine makes, may be stored on a personal USB hard drive, which the user can take out of the machine and carry with them. The users personal information is not stored anywhere on the machine. It is the equivalent of the relationship between a text book and a notebook. The notebook (the USB stick) is yours to write what ever you want, the text book is not for writing in. You take the note book home.

ROM based computing provides perfect consistency across machines. This is important in a laboratory. It does not store settings in the machine, so therefore even clever students cannot alter the programs or settings.

ROM based computing is also very easy to upgrade. It involves the replacement of the ROM card or the re-flashing of the ROM card… a fast and efficient method of refurbishing software.

It has been our work for the last 4 years to design and build a ROM based computer. We have accomplished the task and now we are in the delivery stage.

As ROM based computers come off the manufacturing line, we have opportunities to put in new software to customize the software for whatever region and requirement is necessary. The computer can therefore be used for education, business, healthcare information and monitoring and communicating geriatric needs. With the addition of hardware, the computer can fulfill entertainment and an array of other needs.

In our view, a web accessible computer is essential for all up-to-date information. Access to up-to-date information provides the user with the ability to make decisions based on knowledge leading to action. An illustration of this principle can be found in a rug maker in northern India. Previously, she would make rugs and periodically a buyer would come by offering her a few rupees for her work. Since there was no choice, she sold to him. He would turn around and fly the carpets to America where the artistry of the work fetched thousands of dollars. With the right access, she can now show her work and sell her carpets directly to customer bringing in comparatively large sums of money into her community.

Access to information needs to be a basic right of all people. It is the surest way out of economic slavery. Access to information must come with a willingness to be resourceful. There is not enough raw materials in the world for all books to be made of paper. The cost of an electronic book is almost nothing. The information in the book is the source of power and change, not the physical book. The power is in INK to connect people to the great library that is the internet. Someday soon connectivity will our birth right. This project is one step in that dream.

source:searchwarp.com

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Radar Detector

Written by oneself on 7:59 PM

By: Charles Lamston

For those of you that have no idea what a radar detector is, it is an electronic device that is used by drivers to determine if the speed at which their vehicle is traveling is being watched by a radar unit. This is made possible by police officers bouncing a certain type of radio wave off a vehicle that is traveling at any speed, using a radar gun; they are able to see the speed at which the vehicle is traveling. These are useful devices, and what you need to remember is that under no circumstances should they be interfered with by GPS detectors as this may cause major complications.

But as days go by and technology advances, people are no longer using the devices that are operated by radio waves but are using ones that operate more easily. The new speed detection devices are known as pulsed laser lights or LIDAR. It is said that the LIDAR speed detection device is not as effective as the radar detector that operates using radio waves. This is because the output beam of the device is very accurate and focused. Another reason why radio waves beat LIDAR is because with LIDAR the beam can only go as far as 6 feet where as the radio waves can stretch to over 85 feet. Another important fact is that when a police officer wants to see the speed of the moving vehicle they are going to point the beam in the front of the car, at the headlights and because the radar detectors are built on the windshield of the car, which is away from the beams aim, sometimes the device will not show a reading at all.

The radar detector was a very clever design and who knows, maybe it can help prevent motor vehicle accidents and hopefully save the lives of millions of innocent people.

For those of you that have no idea what a radar detector is, it is an electronic device that is used by drivers to determine if the speed at which their vehicle is traveling is being watched by a radar unit.

Written by Charles Lamston. Find more information on a radar detector

Article Source: http://www.eArticlesOnline.com

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Truck Laptop GPS Mounting Systems

Written by oneself on 6:56 PM

By: Merv Carlson

Consider for a moment the incredible benefits that having a truck laptop gps navigation system will bring to your life and your travels? The truth of the matter is that the more sophisticated systems out today provide much more than simple directions from point A to point B. Today's truck gps navigation systems are your one-stop travel shop when it comes to finding points of interest, dining, fuel stops, and places to rest along the way. In this review we will try to illustrate some of the benefits that a truck lap top gps system will provide.

Perhaps you've never given it much thought, but learning a little more about how a truck laptop navigation device really works will give you something to think about when you get around to considering the advantages that a gps unit such as this can make in your life. Main thing to remember is that not all GPS mounts or vehicle navigation mounting systems are created the same. There are different manners of creation along with different manners of functionality and design and quality. However, they all work on the same idea. For trucks, stability is the key as the suspension is slightly stiffer in trucks. The models created for pickups use heavy tubing, stiffer articulating arms, preferrably cast iron, which will provide a stable desktop for your laptop and allow for you to easily see the screen.

GPS systems use satellites that orbit the earth in order to send signals that are received by the GPS device. The system has software that interprets the signal and uses that data in order to form conclusions about the current location based on the time it took to receive the signal from the satellite, and the exact location of the satellite that sent the data. By combining that information a conclusion can be drawn by the GPS or auto navigation system as to the exact position of the GPS device. Three satellites are used in order to determine the point of intersection and a fourth satellite insures the accuracy of the data.This allows you to see on your screen exactly where you are, or where you want to go.

Navigation systems are more sophisticated and much more functional than the original military Global positioning devices that were used. These systems can be installed in your laptop computer, mounted to a professional laptop truck desk and your all set. You can not only get directions to guide you on your trip, to make up for detours, and get you back on track after wrong turns, but you can also get information about local destinations, rest stops and dining, hotels, service stations, and a few other points of interest along the way. Many pickup truck or car gps systems have upgrade packages that allow you to purchase a subscription which will provide you with up to the minute information about traffic, weather, and construction along your route. The subscription costs for these services can be a deterrent for the casual driver but will prove invaluable to those who rely on correct directions and being on time while traveling extensively through work related situations.

When ever you purchase a GPS or truck laptop stand nav system be sure that the system you purchase is not only full upgradeable but also easily upgraded. It's a pain to have a system that is capable of being upgraded if you can't figure out how to upgrade it. Many of these systems can be upgraded by using a something as simple as a CD or DVD in order to deliver the information and upgrades. If you can't upgrade your system it will become obsolete in time as new roads are constantly being made or changed. If you do not have the latest up to date data on roads you are essentially driving just as blindly as you would be without the gps. This also applies to your laptop mount, be sure you can move the computer mounting system from one vehicle to the next, or at the least be able to get another floor mount base to install in the next unit.

GPS Technology is constantly evolving and it is fairly safe to say that there are some technology items that are better suited to remain at the top than others. The story really is no different when it comes to GPS laptop nav systems and the mounting desks. These systems each have different options and while there is no one system that is perfect for everyone, there are a few systems that consistently outperform. Look for professional grade manufacturer's who use quality components, high-end laptop truck desks are sometimes warranted for 3 years, look for these quality made components, it will prove to be a good choice long term.

You need to know what is available in navigational mounting systems before buying the first laptop mount you see, the same with the gps units. There are many neat buttons and features that can really turn a person's head if she isn't sure of what she will actually need and use in her (or his) travels. Knowing what you need, what you would like, and what you are fairly certain you can live without will help you get the best possible bargain for your laptop gps investment. Mounting brackets to hold your laptop can be used for great versatility, the double as a dvd stand, a writing desk, camera stand and much more.

Don't be fooled into thinking that only people who travel extensively need these useful devices and systems. The truth of the matter is that anyone who spends any time during the day in a truck could seriously benefit by owning a navigation system. The problem lies in deciding which of these systems would be best suited for your specific personal needs and deciding how to mount the laptop in your truck. We have found from experience, professional grade laptop desks will always function the way they were meant to with less vibration, less shock to the laptop, and all the while providing a stable mounting location for your laptop and GPS software.
Consider for a moment the incredible benefits that having a truck laptop gps navigation system will bring to your life and your travels? The truth of the matter is that the more sophisticated systems out today provide much more than simple directions from point A to point B. Today's truck gps navigation systems are your one-stop travel shop when it comes to finding points of interest, dining, fuel stops, and places to rest along the way. In this review we will try to illustrate some of the benefits that a truck lap top gps system will provide.

Where can you find a laptop truck gps mounting system? At Pro-Desks GPS Truck Mounting Desk , and Mounting Systems For Truck Navigation GPS

Article Source: http://www.eArticlesOnline.com

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Multimedia Projectors

Written by oneself on 4:20 PM

By: Dr. D.S. Merchant

Multimedia projectors such as overhead projectors, LCD displays, audio-visual displays in multi-national organizations are mainly used for making presentations like projects plans, health programs, entertainment and education programs in front of a small or great amount of audience. Marketing firms make regular use of these equipments for drawing valuable clients.

Certain problems can occur in the projection equipment such as, resolution problems, difficulties of displaying slides, boot-up problems etc. These problems can ring alarms of losing valuable clients if proper presentations are not done.

Multimedia equipment repair centers are present to handle any type of problem in any multimedia equipment. These centers offer the total after care solution, and ensure that you get the most when your machine is back working with the minimum of disruption.

Some well-known repair centers offer full repair and servicing facilities on all brands of LCD, video, home theatre projectors, which includes collection and delivery of your faulty equipment, a full diagnostics soak test, cleaning of equipment and a quote at an affordable rates which also includes delivery charges.

The repair centers can also diagnosis the fault of your multimedia system over the telephone and advise you the best course of action, either fix at home or send the projector in for repair, to inspect for minor faults or major faults which could take time and money for the repairs.

In addition to the current models, older models that have become obsolete from the market and the manufacturers can also be repaired by the repair centers that have huge inventory of both old and new parts.

There are very few repair centers for the multimedia and presentation equipments because many instruments are imported from different countries or the qualified engineers are called from Western countries.

One of the few repair centers of multimedia projectors, presentation equipments, engineering survey instruments is ‘Graceful Drawing & surveying’. This repair center deals in almost all kinds of survey instruments, for purchase of survey and presentation instruments, repairs and also updating in the hardware of the instruments, Having state of the art equipments to quickly diagnose and repair instruments and skillful and experienced working staff to give 100% quality service to not to let down customers’ immediate demands rental rates. GDS deals in the following sections of equipment.

Multimedia / Presentation Systems:
LCD Projectors
Overhead Projectors
DLP Projectors
Transparency Film
Screens / Flip Charts
Trollies / Mobile Stands
White / Notice Board
Laser Pointers

Survey & GPS Systems:
Total Station
Theodolites
Automatic Levels
GPS/GIS Systems
Surveying Instruments
GPS Devices
Surveying Accessories

Office Equipment:
Office Products
Binding Machines
Paper Shredder
Ammonia Printing Mac
Note Counters

Graceful Drawing & Surveying’ also handles orders relating to electronic instruments, repair of Digital Cameras, laptop’s and other Commercial Electronic equipments.

Article Source: http://myarticlezine.com

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Challenges in Recovering Deleted Email

Written by oneself on 1:15 PM

by Steve Burgess

Both computer forensics experts and data recovery technicians seek to recover deleted data. Data recovery is primarily interested in bringing back files, while computer forensics tends to dig deeper, looking not just for deleted documents, but also for metadata (data about data - such as file attributes, descriptions, dates, and other information) and meaningful snippets of unrecoverable files. One area of particular interest is email.

When most documents are written to a computer's hard disk, each newly created document has its own directory entry (what the user sees as a listing in a folder). If a file has been deleted, but has not been overwritten by another document, the recovery process is a relatively trivial part of e-discovery or of data recovery. But when the data of interest is from deleted email, the discovery process is likely to differ significantly from that of data recovery. Individual emails are stored differently than individual files. Different types of email programs store data differently on the user's hard disk and require different schemes for finding useful information. As a result, the deletion of emails and recovering of deleted emails differs not only from that for other types of documents, but also between different types of email programs.

There are three main types of email in common usage - Microsoft Outlook (often paired with a Microsoft Exchange Server), text-based email client programs, and web-based email, or webmail.

In Microsoft Outlook, all emails are kept in one large, encrypted, non-text file - the PST, or Personal Folders file. Outlook has additional functions and additional content as well. There is an integrated address book, multiple mailboxes, a calendar, and a scheduler, all of which are contained in the PST file. When one looks into a PST file with a file editor or word processing application, there is little or nothing intelligible to the human eye. The file content looks like nearly random characters.

In general, the PST file must be loaded into Outlook to be read. When an email is deleted, or even when it is purged, it may be kept within the body of the single large file, but become inaccessible to the program. Some deleted emails may be recovered by manipulating the file though a manual process, repairing the resultant file, and then loading back into Outlook.

Text-based email programs include Microsoft Outlook Express, Qualcomm Eudora Pro, Mozilla Thunderbird, Macintosh Mail, and others. In text-based mail applications, each mailbox has its own file, and all emails from a given mailbox are kept in that one file. For instance, there is likely to be a single file for all of the emails in the Inbox, one for all in the Outbox, one for each user-generated mailbox, and so on. The mailbox files are primarily text files, When an individual email is deleted, the text may be "orphaned," or released from the body of the file, but may still be recoverable as a file remnant that may contain the body of the email as well as information such dates, times, and sender.

A standard data recovery process would not recover such deleted email as the mailbox that had contained them may still be intact - just not still holding the deleted email. Part of electronic discovery would include searching the unallocated (when a file is written, the operating system allocates a specific area of the hard disk to that file. When the file is deleted, that space is de-allocated, and is referred to as unallocated space) portion of the hard disk for specific terms or phrases that are likely to be within the body of suspect emails. A search may also be performed for email headers that are also text-based. The resulting data may then be gathered and displayed as text files. A third form of email is Web-accessed email. Many, if not most, commercial email providers offer the user the opportunity to access email via a web browser. America Online is another email provider that generally does not store email on the user's computer by default. Email is stored on a remote computer, or distributed across many remote computers, that may be any place on the Internet. As these computers host hundreds or even millions of users and their email, the storage of such email is extremely dynamic. When emails are erased in such an environment, remnants of individual emails and files tend to be overwritten quickly and repeatedly. There may be some remnants found on the user's computer in a Virtual memory or a buffer file, however. The recent US Attorney's scandal highlighted the use of such web-based email (see Why Email Matters: the Science Behind the US Attorney Scandal, by Steve Burgess). http://www.nowpublic.com/why_email_matters_the_science_behind_the_us_attorneys_scandal

There is always a chance that remaining deleted files, or remnants thereof may be overwritten. Due to this possibility, it is best to immediately turn off any computer where the recoverability of data is in question. The longer the computer remains in use, the greater the likelihood of useful data being irreparably destroyed. If a user's computer is likely to be used or inspected during legal matters, or if document discovery is expected, the computer should be turned off to avoid spoliation of evidence.

If precautions are taken once a file is deleted, the file is likely to be recoverable. The same is true of email. While deleted or trashed email may not be recoverable as a complete mailbox file, the content of said email and its metadata might be discoverable or recoverable through the different methodologies available to computer forensics specialists.

About the Author

Steve Burgess is a freelance technology writer, a practicing computer forensics and e-discovery specialist as the principal of Burgess Forensics, and a contributor to the upcoming Scientific Evidence in Civil and Criminal Cases, 5th Ed. By Moenssens, et al. Mr. Burgess can be reached at www.burgessforensics.com, or via email steve@burgessforensics.com

source:www.goarticles.com

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Bluetooth Headsets

Written by oneself on 6:50 AM


By: shagufta

The world is changing fast and so is everything around you. For instance, the existence of a wired world seems to be history with the invention and use of many wireless technologies. One such wireless technology is the Bluetooth Technology. In this article we will cover the Bluetooth headsets, which are fast getting popular and finding extensive use in the households. The Bluetooth headphones are based on a fairly new technology that is going to eliminate the need for wires and cables.

The bluetooth technology enables a short-range communication system that costs less money to operate and gives good results on short distances. The Bluetooth headsets can be used to fit several brands of electronic equipment. The Bluetooth headsets are fairly popular to give you a wire-free experience with your music system and the sound quality is even not compromised with the use of this technology. Here are many types of Bluetooth headsets available in the market and with the best quality you can afford to buy, you are guaranteed crystal clear sound each and every time that will make your listening a pure pleasure. With the technology getting better and better with each day, you can be sure that the latest headsets from Bluetooth will only have the best and latest equipment that is available.

One of the major problems, which used to occur while using a Bluetooth headset was of the noise it generated due to the disturbance in the flow of data. Bluetooth headphones today are great about blocking out unwanted noises while you are using them. The Bluetooth headsets, which eliminate the unwanted sound, are known as noise canceling headsets and are now widely used to cancel the noise and to get the best sound quality. It is important to choose the right kind of Bluetooth headset with all the features you require. Choosing the right bluetooth stereo headphones can make enjoying your favorite music and your favorite audio a lot more pleasurable as well as a great deal more comfortable. A noise dampening blue tooth stereo headsets will keep the noises of the outside world at bay while allowing your favorite music to flow through. This noise-dampening feature is one of the most important things to look for when shopping for a quality set of bluetooth stereo headsets. This ability to reduce outside noise and block out distractions will vary from model to brand, so it is important to shop around with this important feature in mind.

There are also many other factors to consider when shopping for the best bluetooth headsets. It is necessary to remember that when it comes to wireless and Bluetooth headphones one of the most important things to consider is the effective range of the headphones. The range plays an important in the Bluetooth and can define its productivity. It is therefore very essential to look for the Bluetooth headset range and also to compare various products on this feature.
the bluetooth headsets are a stylish, comfortable and hands-free solution for your phone and iPod. For the best selling and most popular bluetooth headsets visit bluetooth-headsets.org

Looking for more information on Bluetooth Headsets check out www.bluetooth-headsets.org your guide to Bluetooth Headsets.

Article Source: http://www.eArticlesOnline.com

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Troubleshooting Laptop Computers

Written by oneself on 4:27 AM

By: Victor Epand

I turn on my laptop and it loads to the login screen. I have Windows XP Professional and the laptop is a Satelite M35X-S109 from Toshiba. When I login about less than 1 minute the computer freezes. I tried to turn the computer on and off, but it frezzes. I think I had somthing to do when i downloaded virus protection from sbc dsl.

Try rebooting and using "Safe Mode", this is accessible by pressing the F8 key repeatedly before Windows starts to load (you know you have it right when a menu pops up that asks if you want to load windows or run in safe mode along with a few other options), choose Safe Mode (not safe mode command prompt only or safe mode with Networking Support). The touch pad (or trackball) will probably not work and the screen will look funny. Go into the control panel and remove that software and reboot. That may fix it, if not while in safe mode run system restore (Start, All Programs, Accessories, System Tools, System Restore) and choose a date prior to installing that software.

I own a Sony Vaio Laptop and I am having CD drive problems. I insert a CD and now it doesn't recognise it being inserted on the computer. Have tried multiple CDs, checked My Computer numerous times and still nothing.

You've probably been told already, but a CD lens cleaner can work wonders. You might also try a blast of Spray air in the side. If there's a hair or dust on the lens it will not be able to "see" the Disc. Other than this, the laser may be out of alignment.

The screen display has turned from landscape to portrait and I am having to turn my head to wiew the screen.

Sounds like the display settings got changed. Right click an empty spot on your desktop and choose properties from the menu that opens. This will open the display properties window. Somewhere in there should be a setting for screen rotation or similar worded setting that will allow you to change the orientation.

I have a Gateway laptop that's just barely a year old. The other day, I went to turn it on, and nothing happened! It was working fine prior to that day. Someone said that it could be a surge problem. Any ideas?

You could try to remove the battery and try getting it to work on AC power alone. If that works then try plugging the battery in and turning it back on. If it doesn't work with the battery and works without it then I suspect the battery may be defective. Modern laptop batteries have circuits inside to tell the computer how much charge they have. Batteries are the weakest link on all notebooks. If it doesn't work even on AC power with no battery, then get a multimeter and check the output of the adapter and compare it with the specs printed on it. It should be no lower than .1 volts from the specified range, for example, if it says 14.2 volts and you measure 13.5 then there is a good change it's bad.

Article Source: http://www.kokkada.com

Victor Epand is an expert consultant for www.BuyRAM.info/ , a computer memory Super Store. BuyRAM.info carries an excellent selection of computer memory, notebook memory, and digital camera memory for every type of computer, notebook, and digital camera on the market. Click Here to Search for System Memory by selecting the make and model of your system.

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i-mate JAMA: home, work or anywhere in between

Written by oneself on 10:29 PM


By:adam caitlin

The i-mate JAMA is one of the 'basic' Window mobile device aimed at users wanting a slim and lightweight way of keeping in touch and organized. The device looks extremely sleek in its dark silver casing. The i-mate JAMA measures 106 x 52.5 x 15.6 mm and weighs just 110 grams which is extremely less for any Window Mobile device. For data input, one has to use a stylus on its 65k coloured TFT touchscreen. Presence of a pair of soft keys, dedicated call keys and a 4-way navigation button makes it easy to use the i-mate JAMA while attending calls and other such basic functions.

This smart phone uses Microsoft Windows Mobile 5.0 Pocket PC as its operating system. This means an i-mate JAMA user gets a full Pocket Office functionality that includes Microsoft Word, Excel and Outlook. A Samsung SC32442X 300MHz processor makes sure that mobile computing with the i-mate JAMA remains fast and effective, without any lag time as seen in some other Window Mobile devices. The hand held can boast of 64 Mb RAM and 128 Mb ROM memory, with provision for further expansion using microSD (TransFlash) memory cards. All these powerful features are backed up by a rechargeable Li-Ion 1000 mAh battery that can give you up to 4 hour of talk time and up to 150 hours of standby time.

The i-mate JAMA supports dual band GSM mobile network and exhibits high network reception quality. Embedded class 10 GPRS technology can give you a decent data connectivity speed. Web surfing with its Internet Explorer (Pocket IE) is easy even for first time users to search, find and even download desired contents from the web. The device features a 2.0 megapixel camera with video recording capabilities. This is a great way to share unusual incidents and pleasant moments in pictures with your near and dear ones via MMS, email or even by uploading them to the Internet.


I mate jama

Adam Caitlin is expertmobile phones
Author.Please have a look at
Sim free phones
.


Source: http://www.articlealley.com/article_194087_45.html

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Satellite Radio For Cars

Written by oneself on 9:35 PM

by: Yh786515 Yh786515

Satellite radio is the hottest, new way to stream music to its listeners. With a low monthly fee, you can enjoy commercial-free broadcasting that is heard nearly anywhere. Enjoy cd quality sound with minimal grey areas. National Stations allow you to listen to the same great channel no matter how far away from the big city you may be. They also offer hundreds of stations to suit your needs. So whether you like oldies, rock, talk, hip-hop, or sports, they have the station that you desire.

Will it fit?

Universal Tuners and Satellite Integration products make it possible for you to enjoy satellite radio no matter what vehicle you own. Improvements in technology have made dash mount units smaller and easier to operate. Antennas are now about the size of a matchbook and can easily mount inside on your dash or outside on your roof without the eyesore of the once larger satellite antenna.

Most aftermarket radios are now equipped to work as a Satellite Receiver so no dash mount controller is needed. Look for the SAT READY logo on your CD receiver to see if a tuner is available. SAT READY units display channel number and song titles, and allow you to scroll through channels like a standard radio station.

OEM integration is also available for select Vehicles. Manufacturers like PACC and Directed make tuners that will adapt to your factory radio to function as if it was sold with the Vehicle. No Dash alteration is necessary, units plug directly into factory harness without splicing so there is no worry about voiding factory warranties. Channel information displays on factory radio just like a regular radio station.

Sirius? Or FM?

Sirius

$12.95/mo Over 130 channels of commercial free music and talk radio. Home of Howard Stern, NFL and NASCAR premium channels such as Playboy radio are also available for an additional charge.

XM

$12.95/mo 170 Channels of digital music. XM is proud to Host MLB, NHL, College games, and PGA tour. For the business man they offer breaking news reports from channels such as CSPAN, CNN, CNBC, and BBC.

What’s new with Satellite radio?

Both satellite companies now offer NavTraffic updates. If you have a built-in navigation unit, you can now get local traffic updates in real-time. For just a low monthly fee your Navigation unit will allow you to Navigate around traffic and bad weather conditions. Source: http://www.sonicelectronix.com/cat_i104_satellite-radio.html

source:searchwarp.com

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Souped Up Laptop Hard Drives

Written by oneself on 8:58 PM

By:pumpkinslayer

Flash hard drives may be picking up in popularity, but they lose out when it comes to value for money. Currently for $300 you can get either a 750 GB traditional hard drive or a 32 GB non-volatile flash disk. For now there is an alternative that sits somewhere between the two.

Hybrid hard drives, or H-HDD combine these two technologies to offer an increase in performance as well as an improvement in power consumption. The flash memory is stored onboard the hard drive and picks up where a normal hard drive leaves off. You can get much higher speed as the mechanical latency associated with most hard drive is not there. Power consumption can be improved because frequently used application data can be stored and then pulled from the flash memory.

These advantages apply mostly to notebook hard drives. They are much slower than desktop hard drives and power consumption is a much bigger issue for notebook users. With these additions H-HDD manufacturers hope to make laptop hard drives reach similar speeds to their desktop counterparts.

Currently, hybrid hard drives require that you run Windows Vista, not because it needs Vista, but because it needs ReadyDrive, a feature that comes with Vista. Which data is stored on the flash part of the drive is controlled by the operating system, and in Vista, ReadyDrive takes care of this. ReadyDrive sees how you use your programs and which ones you use the most, it then puts the most heavily accessed application data onto the flash memory part of the hard drive.

Power is saved when there is a read/write done onto the flash portion of the disk. Because there is no motor, flash media draws much less power. However, when the data is written to the disk the motor still needs to be used and therefore uses that power that was saved.

The flash media suffers from a slower transfer rate than the main part of the drive, but with its much faster access speeds, makes up for this. The fast cache that has become an integral part of hard drives is not replace in these models, but the flash part just complements the functions of the drive.

In actual use there is not really much advantage to this kind of hard drive. Although it promises to improve performance and save a lot of power it really does very little in the real world. Just wait for flash-only drives to come down in price, which is already happening, or for now just use a traditional model.

--------
Computer-buying-guide.com's hard drive section will give you all the latest information you need to know about hard drives and give you help in choosing what you need.

source:users.search-o-rama.com

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Here Are Some Things That Might Cause Monitor Problems

Written by oneself on 4:46 PM


By: Victor Epand

Recently thin horizontal bands (grey in color) have appeared on my screen. When I'm in Internet Explorer, these bands coincide with the text displayed on the screen (even when i am typing this question). Also, the 'Back' button which is green appears nearly fluorescently green instead of the usual green.

If this problem appears, You can try replacing the monitor data cable. It probably won't amount to anything useful, but it could be the cable. If it isn't, I'd say just get a new monitor because it is definitely a manufacturer hardware problem. Definitely try to test a different monitor out before you buy a new one, because if the other monitor is fine then you've singled out the problem.

The monitor only will run on default mode and it won't let me adjust resolution, and can't play games and can't even download sbc virus protections. I would suggest that you re-install the video driver, or download the most current from dell.com. I am assuming that you are using windows and know how to adjust your desktop settings. If you do not, then right click on your desktop, and select propertys, and then settings. You will then be able to select a higher resolution. If you can not, then, Select advanced, and then the monitor tab.

Verify that the monitor is listed correctly, if not go to the HP website, and look for the correct driver for the monitor, and download and install it. This should open up your choices for resolutions, color depths and refresh rates.

When I first boot the computer the monitor works fine, however, after a short time it goes blank (flickers then goes blank-gray). If I give it a whack or two on the top with the palm of my hand the display reappears and stays on without any further interruption. Is there something loose or stuck closed inside the monitor?

Please don't do anything to your display anymore, you can cause more damage. The issue is that a solder joint has failed on the pc board within the display. Most repair centers, TV or Computer, can repair this type of issue fairly cheaply. I would recommend doing this as soon as you can, since the intermittant failure can cause other issues.

My pc system is 18 months old and has been running perfectly on Windows XP. The last 4 days the monitor has switched itself off and on repeatedly when the system is booted up. The on/off button on the monitor doesn't function; it just lights for 1 second, then the screen flicks on for 1/10 second then it switches off, light on switch included, for another second. It will do this for hours. Nothing seems to help; rebooting (difficult if you can't see the screen), disconnecting power to the monitor. Then, suddenly, the screen appears and the monitor functions perfectly.

Is this a monitor or cpu/system issue? The pc has full service cover but the company who would repair the cpu say its a monitor issue and pass me to the monitor company while the monitor company say its a cpu issue and will not exchange the monitor.

If I understand your description correctly, the monitor will restore its self if you unplug it. That being the case I would suspect that the driver for your video card is suspect. I would try downloading the latest drivers for the mother board, video card, and monitor. If this fails then either the Monitor has its lowest resolution decoder chip failing or the video card is failing. The reason the monitor is flicking off and on is that it is not sure that it is getting a vertical and horizontal signal from the PC. It then goes into shut down.

The only reason this may be an errant diagnosys, is that the led on the front of the monitor, "Light", turns off as well. If it is turning amber or yellow, then this is the correct diagnosys, and the video card is likely the cause. Also be sure that the data cable from the monitor to the PC is fastened tightly to both connectors if you have connectors at both ends, if not at the PC.

Article Source: http://www.kokkada.com

Victor Epand is an expert consultant for www.BuyRAM.info/ , a computer memory Super Store. BuyRAM.info carries an excellent selection of computer memory, notebook memory, and digital camera memory for every type of computer, notebook, and digital camera on the market. Click Here to Search for System Memory by selecting the make and model of your system.

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How Large, How Fast? Choosing the Right Hard Drive Size and RPM

Written by oneself on 6:22 AM

ฺBy:Tim Childree

One necessary and extremely important component of computers is the hard drive. The hard drive stores your games, applications, music, pictures, videos, and documents. As such, you should be sure the notebook computer you're thinking of buying has a hard drive that can give you the storage and performance that you need.

There are two important considerations when looking at hard drive specifications for your computer notebook: hard drive size and hard drive RPM.

Hard Drive Size

Hard drive size simply refers to the data storage capacity of a hard disk drive. Desktop computer hard drives offer sizes of up to 500 gigabytes (GB), while notebook computer hard dives offer sizes of up to 160 GB. Notebook computer hard drives are more expensive than desktop computer hard drives with more than twice the capacity of the notebook hard drive. This is due to the engineering difficulties inherent in making high-capacity hard drives for the smaller notebook computers form-factor.

A notebook computer's hard drive size indicates how much data a notebook computer can store. If you are interested in storing large amounts of movies, pictures, or music, you want to go with a larger hard drive to avoid running out of space.

A hard drive's size has very little to do with its performance, unless the drive is almost full. The Windows NTFS File System requires a minimum of 10% of the hard drive to be free space for optimum performance, and it frequently requests as much as 15%. This means that, on a 40 GB drive, Windows prefers that you use a maximum of 34-36 GB, leaving 4-6 GB of space unused. On a 160 GB drive, Windows prefers that you use a maximum of 136-144 GB, leaving a massive 16-24 GB unused. If you start to go over these Windows storage limits, you may notice your computer's performance taking drastic hits.

Hard Drive RPM

Hard drive RPM is a hard drive's rotational speed, measured in revolutions per minute (RPM). Desktop hard drives now have speeds as high as 15,000 RPM. Notebook hard drives, on the other hand, currently have an RPM ceiling of 7200 RPM.

A hard drive's RPM indicates how fast the drive's spindle will move or how fast the hard drive platters will spin. The higher the spin rate is, the shorter the seek time and latency will be. This translates to quicker data access and transfer.

How Large and How Fast

The greater the free space and the higher the RPM, the better your notebook computer's performance will be, so go for a slightly-more-than-comfortable size and the highest RPM for your notebook computer's hard drive. A large hard drive gives you the option to expand in the future, and you can never go wrong with a notebook computer that can give you fast access to your stored data.

It is even more crucial that you go with the top-of-the-line hard drive size and RPM for your notebook computer if you are fond of computer games, you have a lot of multimedia files, or you want to be able to easily upgrade your programs. These games, content and programs take up a lot of space. A high RPM hard drive can also cut down on game load times, giving you more time enjoying your games and less time staring at loading screens.



MALIBAL is the Home of the World's Fastest Laptop! Headquartered in Las Vegas, this groundbreaking company has transmuted the world of mobile computing with its nonpareil laptops and unrivaled 24-hour USA-based support.

Please, check out these recommendations for the best notebook computers.


Source: http://www.articlealley.com/article_192959_10.html

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Apple Imac Wall Mount System - VESA Adapter Bracket For 17 Inch And 20 Inch Imac G5, Intel And Core

Written by oneself on 5:52 AM


By Scott Powers

If you have been looking for an adapter bracket to mount your iMac, but have not been able to find one, you are not alone. Thousands of iMac users, specifically with the later 17" and 20" G5, G5 w/iSight, iMac Intel and Core 2 Duo Intel iMac, were left to figure out how to attach their computers to VESA arm mount and wall mounting systems. With these particular iMac models the stand, often referred to as the "boot", can not be easily removed. Also, I have found that many people purchased the iMac because it is portable and they like the ability to take their iMac with them when they travel. So, removing the stand is not a practical solution for them.

Not too long ago I was in the same predicament. My business is providing anti-theft security devices to schools and hospitals. If a customer wants a computer, monitor, or audio/visual device protected from being stolen or moved, they call me in and I lock it down. A recent project called for me to mount iMac computers for a client. No security features were needed, they just wanted to save work space by mounting their iMac Intel computers up and out of the way. I just assumed there was an adapter bracket out there to purchase and it wasn't until I needed to order them that I realized I was wrong! That the "simple solution" I was depending on didn't exist. Finding the necessary arm mounts and wall mount systems was easy, but attaching my customer's iMacs to the mounting systems was a whole other thing.

After extensively searching online, I concluded I would need to make my own adapter bracket. As I was researching blogs and forums I discovered that there were many people out there also looking for a solution. In discussing it with them, I got a feel for what they were looking for and created an adapter bracket to meet important requirements many of them have. The top 3 requirements are:

(1) The bracket will not require the stand to be removed from the iMac.

(2) It should be interchangeable with both 17" and 20" iMac computers.

(3) The bracket should be esthetically suitable for the iMac; simple to attach and detach.

I successfully met these requirements with the bracket I have designed. It is made from high-grade aircraft aluminum and will have a finish like that of the stand on the iMac. It will mount to both the 17" and 20" stand so there would be no need to purchase a new adapter should you change from one to the other. Attaching the adapter to the iMac is easily done in under minute, it is very user friendly and esthetically pleasing.

If you are searching for an adapter bracket to mount your iMac computer, your search is over! For more information, please visit my website.

Thank you!

Scott has been securing and mounting computer and audio/visual equipment for over 14 years. More information about the iMac mount bracket he developed can be found at his website: http://www.imacmount.com

Article Source: http://EzineArticles.com/?expert=Scott_Powers

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Sony vaio sz

Written by oneself on 5:44 AM


By:fatalus

This laptop is a sleek, big, with keyboard comfort ability, bright screen display, built-in webcam and microphone, a long battery life and good performance.

But it is very expensive, and doesn't have a multiformat card reader, and ordinary speakers. The Sony VAIO SZ has all the features and connections needed by business users. It has 3.8 pounds, it is a heavy notebook, even among Sony laptops, but it still tries to fit among the portable ones without forgoing a legible screen or a useable keyboard.

This laptop has a number of features needed by business users, features like an inbuilt microphone, and webcam for conferencing, and a fingerprint scanner needed for security with others like the Intel Core Duo processor, etc. But if you are not particular about budget, then the Sony Vaio SZ is the best portable laptop to go for.

Its processor is a 1.83GHz Intel Core Duo T2400, DDR2 RAM of 1GB (533MHz), a graphics card of a low-end Nvidia GeForce Go 7400 with a 128MB video memory, and a large hard disk drive of 100GB with a spin of 5,400rpm.

sony vaio sz

The Sony Vaio SZ has a dimension of 12.4 inches width, 9.25 inches depth, and 1.5 inches thick, with a weight of 3.8 pounds (or a little more with its AC adapter). I think it is not so heavy for easy carriage.

Also this laptop has a 13.3 inch wide screen display, with a good brightness effect, with a resolution of 1280x800 which provides a very good display view. Its stereo speakers lie above the keyboard giving its ordinary sound.

It has a battery life of about 5.6 hours, which falls among a competitive rate.

Some more features offered are 1.3 mega pixel webcam, and microphone, a headphone connector, 2 USB 2.0 ports, a VGA and a 4-pin FireWire port. It also has a PC and Express Card slot. Its network features are Gigabit Ethernet, 802.11abg wireless, a 56K modem, and Bluetooth. Operating system is Microsoft Windows XP professional. All these features give you the best in laptop comparison.


Source: http://www.articlealley.com/article_194064_10.html

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Levono thinkpad x60s

Written by oneself on 5:29 AM


By:fatalus

This laptop is extremely portable, having a good keyboard, fingerprint scanner, inbuilt WWAN radio, excellent performance, extended battery life if configured with high-capacity battery. But it is very expensive compared to other models; it doesn't have an optical drive, and also doesn't have an inbuilt feature for Express Cards.

This ultra portable laptop is the first to use an Intel Core Duo processor. It combines an outstanding performance and surprisingly good battery life, packed with other features and a compact case.

Its dimensions measures 10.5 inches width, 8.3 inches depth, and 0.8 inch thick in front(and 1.1 inches thick in back). It has a weight of 2.7 pounds (3.5 pounds with battery inclusive).

levono thinkpad x60s

The ThinkPad X60s has a 12.1-inch screen which has a resolution of 1,024x768 that offers just sufficient screen view quality. This laptop has large keys which makes typing for long very comfortable. Just like all ThinkPad, the X60s features a red Track Point pointing stick; there are 3 mouse buttons underneath the keyboard, and a fingerprint scanner for security purpose.

Business users will discover that all the ports they want are on the ThinkPad X60s, which includes VGA, 3 USB 2.0 ports, 4-pin FireWire, with also a microphone and headphone jacks. Also included is the Type II PC card slot, and secure digital card slot, but although Express Cards need an adapter which is not inclusive.

It network connections includes a modem, 802.11abg Wi-Fi, Gigabit Ethernet, and an inbuilt cellular radio that offers connection to Verizon's EV-DO data network.

Its hardware features are an Intel Core Duo 1.66GHz processor, 667MHz RAM of 512MB, a hard drive of 80GB spinning at 5,400rpm with a built-in Intel graphics.

This laptop has a very long and surprising battery life of 8-hour, 16-minute. This is really impressive.


Source: http://www.articlealley.com/article_194075_10.html

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Garmin GPS Nuvi 350 Review

Written by oneself on 10:28 PM


By M. Bruno

The GPS Nuvi 350 is one of the hottest GPS systems on the market today. In this short review we’ll take a look at the features, quality and design of this popular model from Garmin.

If you’re new to the world of GPS technology it may be helpful to first get an understanding of just what GPS is.

A typical GPS receiver includes an antenna to catch satellite frequencies a receiver, and a clock . A GPS receiver will generally have up to 20 channels.

GPS receivers are available in automobiles, telephones even watches, and can provide you with directions to get almost anyplace that has been mapped. This is certainly true in the United States where I have seen the GPS Nuvi 350 used in cities, towns and even many rural areas. I understand that they are widely popular in Europe and elsewhere as well.

The GPS Nuvi 350 is manufactured by Garmin which should provide a sense of comfort as Gramin is an industry leader in the manufacture and design of GPS technology.

Let’s take a closer look at the GPS Nuvi 350.

The GPS Nuvi 350 is approximately 3.9 inches. I can easily put one into any pocket, ladies will find it an easy fit into a purse.

Albeit small, Garmin has packed this pint sized GPS with some powerful features.

For example, you can get directions read out with street names. This allows you to keep driving safely without looking at the display screen.

The screen itself is a color touch screen, three and one half inches, that is bright and easy to read. Also included is an MP3 player, audio book player, JPEG picture viewer, world travel clock with time zones, currency converter, measurement converter, and a calculator.

I used the JPEG Viewer to show pictures I’ve taken with my phone. But that’s not a reason to buy any GPS system, just consider it an extra bonus feature of having truly accurate directions in a reliable GPS is what you are really after.

All of these extra features are fun toys and are handy of you are traveling for work or pleasure. But in my opinion the best feature of the GPS Nuvi 350 is the GPS technology which makes traveling a snap and a pleasure.

Another nice feature of the GPS Nuvi 350 is that it works as soon as you take it out of the box, and is as easy to operate as Garmin claims. If you use the GPS Nuvi 350 in you car you’ll have a suction cup mount that’s reliable and won’t fall on the floor of the car. A handy AC adapter is also included.

Having used the GPS Nuvi 350 in more than one U.S. locale I was happy to find detailed street maps for North America which included text-to-speech technology.

All in all, the GPS Nuvi 350 is a compact and easy to use GPS that is reliable and jam packed with a lot of bonus features that make the detailed street maps for North America and includes text-to-speech technology. If you should get stuck the Reference Guide will get you moving in the right direction in no time.

A personal travel aide and all around worthwhile piece of technology to own, the GPS Nuvi 350 gets 5 stars in our opinion.

Looking for more information on the GPS Nuvi 350 AND the lowest price from a reputable vendor? Garmin Nuvi 350 price at http://www.garminnuvi350price.info

Article Source: http://EzineArticles.com/?expert=M._Bruno

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Cisco PIX/ASA Security Appliance: How to Configure Banners

Written by oneself on 9:55 PM

Don R. Crawley

Banners can be configured to display when a user first connects (MOTD), when a user logs in (login), or when a user accesses privileged mode (exec). Banners are used for legal warnings such as when a user is cautioned not to access a restricted system or that their access of a system is subject to monitoring and logging. Banners are also used on locked systems placed at customer locations by service providers to provide contact information for device access or technical support. The Cisco security appliance supports the use of login banners in console sessions and Telnet sessions, but not in SSH sessions. Exec and MOTD banners are supported in console, Telnet, and SSH sessions. Banners can be up to 510 characters in length. You can create multiple line banners either by creating multiple banner statements or by using the keystroke sequence of "\n" which inserts a carriage return.

Here's how banners are displayed:

MOTD Banners--When usernames are not configured, MOTD displays at login in a serial console session and before login in Telnet sessions. When usernames are configured, MOTD displays before login in a Telnet session and after login in a serial console session.

Login Banners--The login banner displays before login in Telnet and serial console sessions.

Exec Banners--The exec banner displays upon login in all sessions.

How to Configure a Banner

Note: The following procedures were tested on an ASA 5505 Security Appliance running software version 7.22. Other hardware or software platforms may require modification of these procedures in order to function properly.

To configure a banner, use the following configuration mode commands:

asa(config)#banner motd This is a restricted system.
asa(config)#banner motd Do not attempt unauthorized access.

Notice the use of two banner motd statements to create a multi-line banner. As mentioned previously, you can also use the "\n" key sequence to insert a carriage return.

You can view the banners you created with the following privileged mode command:

asa#show running-config banner

Hands-On Exercise: Creating Banners on the Security Appliance

The following procedures are for training purposes only and should only be performed on devices in a laboratory environment. Under no circumstances should these procedures be performed on equipment in a live, production environment without first verifying their suitability in a laboratory environment.

In the following hands-on exercise, you will create MOTD, login, and EXEC banners.

Step 1: In configuration mode, enter the following commands:

asa(config)#banner motd This is the MOTD banner
asa(config)#banner login This is the login banner
asa(config)#banner exec This is the EXEC banner

Step 2: Display the banners you just created with the following command:

asa(config)#show running-config banner

Step 3: Type exit repeatedly until you are logged out of your laboratory security appliance.

Notice which banners are displayed.

Step 4: Enter privileged mode with the command "enable" and notice which banners are displayed.

Step 5: From your laboratory computer, start a Telnet session and again observe which banners are displayed. When you are finished, exit the Telnet session.

Step 6: Also from your laboratory computer, start an SSH session and again observe which banners are displayed. When you are finished, exit the SSH session.

Note: The above procedures are similar to the procedures used to configure banners on other Cisco devices including routers.

About The Author

Don R. Crawley

Visit http://www.soundtraining.net to learn more about soundtraining.net's business skills training programs for IT professionals, plus accelerated technical training programs for IT professionals in the areas of Cisco, Microsoft, and Linux products. To learn more about soundtraining.net's Two-Day Cisco PIX/ASA Firewall hands-on seminar, visit http://www.soundtraining.net/onlinestore/categories/category34.html

source:www.articlecity.com/

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Three Ways to Improve Query Performance (help for sql server time outs)

Written by oneself on 6:53 AM

Ben Vegiard

So, you want help writing a query in sql? You've got it! You are about to learn some best practices you can start using within seconds that will reward you for years to come.

OK, I admit it, I am a programmer too. So, I got my MCDBA to show off that I knew a thing or two about a database. So, lately I have been doing more DBA work than programming work. Yes, I can hear you crying “Traitor!” I have gone over to the dark-side; the “Back-end.”

The good news here is that I can (to coin a well overused phrase”) feel your pain. Many developers view database as some sort of necessary evil. In my experience, the average developer knows just enough SQL to insert, update, and delete a single record from a database. Let the DBA’s handle the rough stuff. Unfortunately, many developers don’t have access to a DBA (at least not one willing to work with them) and so have to work out the SQL on their own. As well, imagine the peer respect, lavish salary increases you will gain, and nominations for sainthood you will receive when you’re able to make the “stupid thing go faster.”

So, here are the three biggies that I have found that the average “Joe Programmer” can put into effect to increase their Query’s response time.

One: Everything Works in Dev!

To start off, let’s think outside the box a bit. I know I said I was going to give tips on how to make your query faster… and I am. However, this may be a bit off the beaten path. But doesn’t that make for a great tip? Something you haven’t already heard a hundred times?

Here’s the backdrop: The app is in the can, working great, and the roll out begins. Within a few days, you start hearing murmurs that parts of the app are slow. These murmurings soon become help tickets. These help tickets soon become meetings with the boss and the users. These meeting often turn into alcoholism…. You get the point.

This unfortunate situation arises all too frequently, and there is a relatively simple solution to it. You see, everything always performs well in your development environment because you have relatively few records in your development database! Sure, if I only had 30 records in my main table, my application will work wonderfully too! Once it gets into the real world, and a few hundred thousand or millions of records are input or imported, the need for performance tuning becomes a critical apparentness.

The solution is simple; create the same number of records in your development environment, as you’d expect to have in the first year of operation. If you have importable data (say, from legacy systems or third party feeds) them pump them in. If you do not, then there are many open source utilities to create mock data that would closely conform to your actual data. Now, as you're first writing your queries, you’ll have a really good idea if you need to concentrate on a particular query to avoid future headaches and counseling bills.

B) Know your Indexes

Many developers ignore indexes altogether. Many do not understand them. An index is merely a Table of Contents to the data in the database table. While developing an application, print out the schema of the database, including indexes, so you know what they are while writing your queries. If an appropriate one is missing, have someone experienced with indexes create it (whether that be you, the developer on the other side of the wall, or a DBA)

Here’s the impact. Say you are writing a contact management system. You would probably have a table with first name, last name, etc. For simplicity, we’ll keep this all in one big table with obvious field names. You’d probably write a query that looks something like:

Select Person_ID, Name_First, Name_Last
From Person_Data
Where Name_Last = @NameLast
And Name_First = @NameFirst

With 100 rows, this will work instantly. However, as your database grows to several thousand records, the query will slow down, eventually hitting the seconds range. If you merely add an index with the columns Name_Last and Name_First, you will have basically instant return time for the life of the application.

III) Function Calls are Evil Incarnate!

The following queries look extremely innocent. However, they are all application killers once the table grows to more than a couple thousand rows:

Select Person_Data_ID, Name_First, Name_Last
From Person_Data
Where Next_Contact_Date > GetDate()

Select Count(*)
From Person_Data
Where Upper(Name_Last) = ‘SMITH’

Select Avg(Collar_Size)
From Person_Data
Where dbo.MyFunc(Person_Data) > dbo.MyOtherFunc(22)

For each of these statements, a table scan will be used to try and fetch data. A table scan is simply an operation where the database looks at each and every record in the table to see which ones meet it’s criteria in the Where clause. We would much rather the database use the index and only fetch the 20 records it needs rather than it reading 200,000 records in a table scan for the 20 records it needs. However, the use of the functions (GetDate(), Upper(), MyFunc(), MyOtherFunc(), etc) keep it from doing that.

Why do functions keep the database from using indexes? It’s simply because the database does not know the result of the function. Each time GetDate() is called, a different answer could come back. Each time MyFunc() is called it could come back with a different result since the function could potentially be based on the input value, the time of day, or data that is being modified elsewhere in the database. The only way the database can know for certain the answer to the function call is to make the call and see what the answer is. Since the database doesn’t know ahead of time what the answer is, it cannot use the index to go to the corresponding entry.

So, whenever possible, avoid the use of functions. A great solution to these problems are (in order):

Select Person_Data_ID, Name_First, Name_Last
From Person_Data
Where Next_Contact_Date > GetDate()

Becomes

Declare @DT DateTime
Set @DT = GetDate()
Select Person_Data_ID, Name_First, Name_Last
From Person_Data
Where Next_Contact_Date > @DT

Vola, the database gets the value of GetDate() ahead of time. Since the value of @DT will not change while the query is running, it can use an appropriate index.

Select Count(*)
From Person_Data
Where Upper(Name_Last) = ‘SMITH’

Becomes

Select Count(*)
From Person_Data
Where Name_Last = ‘SMITH’

“Whoa?” I hear you cry. All you did was take the Upper() function out. What about case sensitivity?!? Actually, I’m cheating a bit here. With Microsoft SQL Server, the default index collations are case insensitive. In plain terms, that means the searches are case insensitive by default. With Oracle and other database engines, you can choose to make your indexes case insensitive, so why not? For a simple name search, it’s a good idea. And, it avoids the dreaded Table Scan.

The third example is a bit tougher. Essentially, if your function is extremely complex, you may not have a choice but to use it and let the user know to expect poor performance (a please wait screen goes a long way here, guys). However, if the function is merely a simple multiplication (i.e. Unit_Price * Quantity) then simply do the math in the statement and avoid the function. Please note: Many developers have it beaten into them to make reusable code so changes can be made in one central place. The fact of the matter here is that a SQL statement is not the same as a C program!! You should adjust accordingly. One of the adjustments is to give up reusable code in this context in favor of better performance.

Conclusion

Well, there ya have it. Three tips to start you on the road to better performance. Incorporate these into your daily routines and you’ll get results without dieting, without exercising, and without any boring calorie counting.

Ben Vegiard is a Professional IT Consultant currently working on Government database projects. Ben and his colleague have recently started a blog providing free sql notes and tutorials covering a variety of the issues faced by todays database-driven system developers. Please feel free to check out SQL Coach for more information.

Article Source: http://EzineArticles.com/?expert=Ben_Vegiard

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The Need For Remote Backups

Written by oneself on 6:29 AM

by Lee Smith

Remote backups, as the name suggests, are backups taken remotely. These backups are taken without interfering with the server, the data of which is being backed up. Remote backups are relatively new but are catching up quite rapidly as compared to other forms of backup.

Remote backups are exactly similar to online backups. Online backups involve copying the data while it is being saved on the server and simultaneously saving it to some offsite location. Online backups are also known as real time backups as they involve backing up the data in 'real time' that is almost simultaneously to the entry of the data. In the same way, remote backups involve taking a backup of the data to be backed up in real time. Real time backups involve backing up the data as and when it is entered into the system. However remote backup and online backup should not be construed to mean the same thing. Remote backups are a part of online backups. Remote backups are a type of online backups, which are normally preferred by organizations as they do away with the shortcomings of conventional backups as well as the shortcomings of other forms of online backups.

Remote backups involve backing up of the data of a particular server from a place distant to the server. Online backups involve running a backup process simultaneously on he server, which is to be backed up. This often leads to the server being overloaded with multiple processes and programs. This leads to low performance and output levels from the server. It also increases the risk of a server crash due to overloading. These shortcomings of other forms of online backups led to the origin of remote backups.

Remote backups do away with almost all shortcomings of conventional forms of backing up data. Remote backups do not involve interfering with the server being backed up. This virtually rules out any form of mishap to the server due interference during the back up process. Hence data integrity is not compromised on during the process of remote back up. Also remote backups are conducted simultaneously to the process of data entry. Hence, this form of backup does not require the server to remain idle for some time. This form of back up thus does not involve any down time on the part of the organization. Thus the organization can save on many productive man-hours. These can further be used profitably by the organization.

Remote backups also do away with the shortcomings of the other forms of online backups. As they are not run on the server being backed up, they do not compromise on the integrity of the data being backed up as also on the performance of the server. Also, such backups can be retrieved almost instantly. This is not the case with other forms of online backups, which can be retrieved only with a certain time lag. Remote backups also have a distinct advantage in comparison to other forms of backup. Remote backups are taken simultaneously offsite on a different server and hence are almost always reliable. Remote backups are steadily gaining ground among corporate and other organizations due to their obvious advantages and are here to stay.

About the Author

Lee Smith writes about remote secure online backups http://www.networklondon.co.uk/services/secure-backups.html

source:www.goarticles.com/

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High-Performance Computing On A Shoestring

Written by oneself on 6:23 AM

Zach Hope

I just love to save money when it comes to PCs. It is so satisfying to never have called out a tech guy to sort out errors because you can sort them out all by yourself. People I know throw away an amazing amount of money on computers - they get the cutting edge technology as soon as it comes out and then after a short time it is out of date. In contrast, I only purchase the best value equipment and keep them well maintained so that it is just as powerful as other more expensive computers.

When it comes to PCs, there is a rule of thumb that says that the cost of performance halves every 12-18 months. As far as I’m concerned, this translates as if you really want the latest and greatest technology just exercise a little patience. You will get it sooner or later, and you’ll save loads of money, depending on just how patient you can be. As they say great things come to those who wait, and that is definitely the case with computers.

The trick is to combine this rule of thumb with another that PCs are faster when they are correctly set up.

The result is that:
1. You will save $100s per annum as you are letting prices go down before purchasing.
2. Your system is always performing at its best and thus often running quicker than more expensive PCs with more advanced specifications.

It is a simple piece of knowledge that most people don’t ever think about. When you see adverts for the up and coming PCs they without fail tell you just how powerful they are. They never tell you the truth which is your current system is only operating at a fraction of its potential speed.

Maybe it’s because there is more money to be made by selling another system, than repairing your old one. In the UK the computer store PC World now has a department called the Tech Guys. If you ask me they ask for a small fortune when you think that some of the solutions can be executed by the average home user if they just were given the secrets. Worse still, I read an article in the Times newspaper that said inexpensive errors are being misdiagnosed as more expensive repair work. I get the impression that they are using the Tech Guys as a ploy to get people to go for unnecessary upgrades.

Zach Hope is the owner of Speed-Up-Windows-XP.com , a site that shows how to cure a really slow computer. Before you buy your RAM or upgrade your processor, you should consider trying to speed up Windows XP. Visit Speed-Up-Windows-XP.com now to Speed up XP and you could save you $1000s by avoiding unnecessary PC upgrades.

Article Source: http://EzineArticles.com/?expert=Zach_Hope

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