"warning: Page Has Expired" Error In Ie When Hitting "back" Button

I have a classifieds website, and when posting a new classified users fill out a form offcourse. Then they hit the submit button, and a 'verify' page appears which displays what th

Solution 1:

see: Chris Shiflett: How to Avoid "Page Has Expired" Warnings:

Recap

To avoid "Page Has Expired" warnings, set session.cache_limiter to private, and make sure that any form using the POST method submits to an intermediate processing page that redirects the user to a different URL.

Solution 2:

Just do not use verify.php, but make it all on the same page. http://en.wikipedia.org/wiki/Post/Redirect/Get