I have a page that submits a form to another site, which in turn sends a request to re-display my page. Your typical cart operation. In Opera, and only Opera, I've gone nearly bald trying to force a Refresh on the return trip to my page. I've even resorted to setting a database flag and 'turning on" the meta-refresh directive - to no avail. Why oh Why can't I force a Refresh this page?
I'm sending this header information (the page is PHP):
header("Connection: Keep-Alive");
header("Cache-Control: max-age=0, must-revalidate");
header("ETag: $etag");
header("Last-Modified: $gmdate_mod");
header("Keep-Alive: timeout=5, max=60");