Delete your internet cache:
Netscape users
Edit-->Preferences-->Advanced-->Cache-->Clear Disk Cache (and memory cache)
Internet Explorer users
Tools-->Internet Options-->Temporary Internet
Files-->Delete
Files...
Now restart your browser.
Safari users
Safari (top left) -->Empty Cache
Firefox users
Tools-->Clear Private Data-->Select cache -->Confirm...
Now restart your browser.
And if you run IExplorer, make sure it is set to check for the newest version of each webpage on every visit.
Internet Options / General tab / Temporary Internet
files box / Settings…