>I'm using Windows XP home edition on the laptop. I can not work normally on this site. Each time I have 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.
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>To resubmit your information and view this Web page, click the Refresh button.
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>Do you know, if it's possible to adjust? I have the same problem on other sites too.

I'd look in IE options for cache issues and security issues.