How resolve the problem - Warning: Page has Expired

After upload file on server using submit form with enctype="multipart/form-data", I return page with link. If user clicks on link and then clicks back, IE5.5 return page with

<<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. >>

How compel IE to return my page instead of this message?

Option "Do not save encrypted pages to disk" disabled in Internet Explorer Advanced Settings

I return "cache-control: public"

[745 byte] By [alexwork] at [2007-9-26 2:09:28]