As we mention often to clear your browsers cache I thought I would stick this in here so that its easily found how to do it in (most) all browsers.    If you use a browser not included in this list pm me and I'll add it.

Clearing Cache on Microsoft® Internet Explorer 6.0
Click Tools
Click Internet Options
Click Delete Files.
Click OK on the Delete Files dialog box.
Click OK.

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Clearing Cache on Microsoft® Internet Explorer 7.0
Click Tools
Click Delete Browsing History 
Click Delete Files in the Delete Browsing History dialog box.
Click Yes.
Click Close.

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Clearing Cache on Netscape® Navigator 9.X
Click Tools and select Options.
Click the Privacy.
Click Clear Now under the Private Data section.
Check the box Cache and Clear Private Data Now.
Click OK.
Close and re-launch your browser.

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Clearing Cache on Firefox 1.0 - 1.5
Click Tools and select Options.
Click the Privacy Icon.
Click Clear next to the Cache section.
Click Ok.
Exit and relaunch the browser.

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Clearing Cache on Firefox 2.0 - 3.0
Click Tools and select Options.
Click the Advanced icon and click the Network tab.
Click Clear Now under the Cache section.
Click Ok.
Exit and relaunch the browser.

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Clearing Cache on Opera
Click Tools menu
Click Delete Private Data.
Click the Details button.
If you do not wish to delete cookies, saved passwords, etc., remove checks from them in the list.
Press Delete.

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AOL 7.0 - 8.0 - 9.0
Close your browser.
Click Start, select Settings and Control Panel.
Double-click Internet Options.
Click Delete Files.
Click OK on the Delete Files dialog box.
Click OK.

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Clearing your browsers cache should be done often.

For a VERY good program that can do this for you and more:
http://www.ccleaner.com/
CCleaner is FAST and FREE.

Cleans the following:
 
Internet Explorer
Temporary files, URL history, cookies, Autocomplete form history, index.dat. 

Firefox
Temporary files, URL history, cookies, download history. 

Opera
Temporary files, URL history, cookies. 

Windows
Recycle Bin, Recent Documents, Temporary files and Log files. 

Registry cleaner
Advanced features to remove unused and old entries, including File Extensions, ActiveX Controls, ClassIDs, ProgIDs, Uninstallers, Shared DLLs, Fonts, Help Files, Application Paths, Icons, Invalid Shortcuts and more... also comes with a comprehensive backup feature. 

Third-party applications
Removes temp files and recent file lists (MRUs) from many apps including Media Player, eMule, Kazaa, Google Toolbar, Netscape, MS Office, Nero, Adobe Acrobat, WinRAR, WinAce, WinZip and many more... 

100% Spyware FREE
This software does NOT contain any Spyware, Adware or Viruses. 

thanks Omi..
That will flush the dns, but will not delete temp internet files, cookies, history.  
  

Every time you visit a webpage, forum, etc your browser downloads every picture, html file, css file, etc to your computers hard drive to the Temp Files Folder.  If you NEVER empty your cache that folder gets HUGE and can slow your browser down tremendously.   There are also times it can cause some problems with java, etc.   Its always wize to clear it once in awhile.   Clearing history and other things also removes your tracks.  For security reasons that means its a GOOD idea to clear it.   

3lf thanks. I forgot to add Fox 3.0 when it was released.   Settings are the same as in 2.0 so I edited the list abit.. shorted it up by putting some of them together  (made sense)

thz for this guid man!!