A lot of times we deal difficulty in accessing a number of URL’s due to corrupted local DNS cache. Following are the steps to clear local machine cache for various operating systems:

A) Windows XP/Windows Vista/Windows 7:

1) Click on Start >> All Programs >> Accessories.

2) Open Command Prompt.

3) In the Command Prompt window type in the following command:

C:\>ipconfig /flushdns

4) If it displays a message “Successfully flushed the DNS Resolver Cache” It has removed the DNS cache for your local machine now.
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The browser cache temporarily stores images, scripts, and other parts of websites while you are browsing. This is normally a good thing because this enhances performance and load time.

The browser cache usually works behind the scene: you are unlikely to notice it even exists unless you feel like digging deeper.

But do you know that you can actually have quite a bit of fun viewing your browser cache? Do you know why and how you can clean it? Today’s tutorial is just about that: what you can do with your Firefox cache.

Viewing Your Firefox Cache

The cache statistics and directory location can be viewed in about:cache. Then: More »

By following a few simple guidelines, you can maintain your computer and keep it running smoothly. This article discusses how to use the tools available in Windows 7, Vista, and XP Service Pack 3 (SP3) to more efficiently maintain your computer and safeguard your privacy when you’re online.

1. Free up disk space

The Disk Cleanup tool helps you free up space on your hard disk to improve the performance of your computer. The tool identifies files that you can safely delete, and then enables you to choose whether you want to delete some or all of the identified files.

Use Disk Cleanup to:

* Remove temporary Internet files.
* Remove downloaded program files (such as Microsoft ActiveX controls and Java applets).
* Empty the Recycle Bin.
* Remove Windows temporary files such as error reports.
* Remove optional Windows components that you don’t use.
* Remove installed programs that you no longer use.
* Remove unused restore points and shadow copies from System Restore. More »

Firefox has been outperforming IE in every department for years, and version 3 is speedier than ever.

But tweak the right settings and you could make it faster still, more than doubling your speed in some situations, all for about five minutes work and for the cost of precisely nothing at all. Here’s what you need to do.

1. Enable pipelining

Browsers are normally very polite, sending a request to a server then waiting for a response before continuing. Pipelining is a more aggressive technique that lets them send multiple requests before any responses are received, often reducing page download times. To enable it, type about:config in the address bar, double-click network.http.pipelining and network.http.proxy.pipelining so their values are set to true, then double-click network.http.pipelining.maxrequests and set this to 8.

Keep in mind that some servers don’t support pipelining, though, and if you regularly visit a lot of these then the tweak can actually reduce performance. Set network.http.pipelining and network.http.proxy.pipelining to false again if you have any problems. More »

For most users, Firefox doesn’t use an abnormally large amount of memory. For others, however, Firefox’s memory consumption is a major problem. Typical Firefox memory usage reported by Windows is around 50-100 MB, with virtual memory usage at 100-150 MB. These numbers will vary because Firefox is configured by default to use more memory on systems that have more memory available and less on systems with less.

1. System Extensions

WindowBlinds can dramatically increase memory use. To continue using WindowBlinds and Firefox without memory issues, add Firefox to WindowBlind’s exclusion list.

2. Download History

Firefox can slow down or hang if the download history is allowed to accumulate. Clear the download history (you may need to exit Firefox and delete the file “downloads.rdf” from the profile folder in some cases) and change this setting to solve the problem: More »