While our web servers are updated immediately, when you go to view your new web pages you may only see the old ones. This is likely to be due to caching where old pages are cached on your hard drive or your ISP's Proxy server.
There are two kinds of caching, local caching and proxy caching.
Local caching is taken care of by your Browser and your hard drive.
Web pages are stored or cached on your hard drive. This cuts down the time of loading pages that are visited on a regular basis.
To alter your Web cache (IE6) settings you need to go to Tools Internet Options and then General.
Click on Settings in the Temporary Internet Files.
Set this to Automatically.
On a page that should have been updated in internet explorer you can hold down the ctrl key and press f5 and this will force the browser to talk to the server to pick up the latest page that is on the hosting server.
Proxy caching is web pages stored on your ISP's Proxy server.
Proxy servers are used by ISP's to cache popular page requests from their clients.
You can un check your ISP's Proxy server by going to (IE6) Tools then Internet then Connections then your dialup settings. Un check the Proxy server option if it is ticked.
You can also use Meta tags in your HTML source to force browsers to deliver the most recent modified page.
For more information on Web Caching you can go to: Caching Tutorial for Web Authors and Webmasters at http://www.mnot.net/cache_docs