Sounds like a Cookie problem to me...
every time you come back your IE thinks... hey..he has been here.. ill load the page quicker from my files than from the Internet. and then he brings you the old one...
I say delete your cookies.. or internet files.
to do so... simply press "Tools
in your menu and then "internet options
There on the general tab is a button that sais: "delete files
and "clear history
well i always clear them once in a while... i have all my pages in my favorites... so im in no need of cookies
hope this helps