Warning: Page Has Expired

[Rich]

I am running IE 6.0 with Windows XP. When I hit the Back
button on certain pages I get the following
message: "Warning: Page has Expired. The page you
requested was created using information you submitted in
a form. This page is no longer available. As a security
precaution, Internet Explorer does not automatically
resubmit your information for you. To resubmit your
information and view this Web page, click the Refresh
button."
When I hit Refresh a message pops up and I have to hit
Retry. The page then loads.
This was not happening a few days ago. It also doesn't
happen on my laptop running the same programs.
Any suggestions?

 

[hardhead]

it happens to me, always has, links in hotmail amd some
others. they don't give much time.