We have the response header set to turn off cache for certain pages. Cache-Control: no-cache, no-store Expires: -1 Pragma: no-cache This seems to work fine in all browsers except IE 8. Certain pages will be retreived from cache when going back to it a second time when it should be refreshing. Then when going to page a third time it refreshes. These are dynamic pages. So If I do a back arrow to page will show the cached version. Then if I do a reload it will refresh. I have browser set to get new page each time. I know this is a reverse proxy issue because when I view same page in sub-domain that does not have squid active there is no caching problem. I don't see this odd behavior in Firefox or chrome. They always hit the server for new pages each time no matter if I hit the back arrow or not. Andy