method=post destroys PHPSESSID??

Hello all, I'm having a heck of a time with a file uploader page. When I set method=post on the file uploader form, the PHP session is somehow corrupted during the upload, and any links made in the in the resulting page (photoupload.php) don't pass along the session even though they have the exact same PHPSESSID value. ================================================== //upload request page <FORM name="uploader" method="POST" ACTION="photoupload.php" onSubmit="return checkform();" ENCTYPE="multipart/form-data"> <input type="hidden" name="PHPSESSID" value="<? echo $PHPSESSID; ?>"> . . . [snip] </form> ================================================== The session and variables seem fine _IN_ photoupload.php, but when I try to link to another page from the photoupload.php page, it is broken. But when I right-click on the links, copy the link shortcut complete with PHPSESSID, e.g. (http://foo.bar.com/asdfsad.php?PHPSESSID=!@#$!@#$!@#$!@#$!@#$@!#$) and then I take and paste that into the location: field in a newly opened web browser, the session works and I can continue to use it. But when I try to click on the link inside of the photoupload.php, the session dies and doesn't show any of the PHP session variables even though I've checked and they exist and have values in the session files on the hard drive on the server. One more weird anomaly, is that when I change the method=post to method=get in the html upload request page, I don't have these problems with the session. (I just have problems with the file upload because it requires method=post). Anyone have an idea to whats going on here? Thanks Dan