A browser cache is a mechanism for the temporary storage (caching) of web documents, such as HTML pages and images, to reduce bandwidth usage, server load, and perceived lag. (Wikipedia) The pages that you visit on the internet are temporarily stored on your computer in your browser's cache. Sometimes when you return to visit a web page, your browser displays the page in the cache, instead of downloading a new page.
This tutorial will assist you with clearing your browser cache, which will help your computer run better.
If you are using Internet Explorer 6:
Open Internet Explorer 6 and go to Tools. Then select Internet Options, and select General.
Click Delete Files. Check the box next to Delete all offline content in the window that opens and click OK.
For Internet Explorer 7, 8 and 9:
Open Internet Explorer. Click on Tools in the top menu bar. Scroll down and select Internet Options. Click Delete under Browsing History. At the bottom, click Delete All, or mark the items you wish to delete, such as Temporary Internet Files and History, then click Delete or Yes.
Close Internet Explorer entirely and re-launch.
Clearing your browser cache in Mozilla's Firefox, click here.
Clearing your browser cache in Google Chrome, click here.
Clearing your browser cache in Mac's Safari: From the Safari drop-down menu, click Empty Cache.