note 48876 added to function.session-start

Is it just me or do sessions no longer carry global variables from one page to the next? I use session_start(); $_SESSION['variable_name']; on each page, but using an echo staement I can see that the session id changes between pages. Why? I didnt have this problem last week using the same script. Can anyone throw some light on this subject? ---- Manual Page -- http://www.php.net/manual/en/function.session-start.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+48876 Delete -- http://master.php.net/manage/user-notes.php?action=delete+48876&report=yes Reason: bad code -- http://master.php.net/manage/user-notes.php?action=delete+48876&report=yes&reason=bad+code Reason: spam -- http://master.php.net/manage/user-notes.php?action=delete+48876&report=yes&reason=spam Reason: useless example -- http://master.php.net/manage/user-notes.php?action=delete+48876&report=yes&reason=useless+example Reason: contains commercial links -- http://master.php.net/manage/user-notes.php?action=delete+48876&report=yes&reason=contains+commercial+links Reason: useless note -- http://master.php.net/manage/user-notes.php?action=delete+48876&report=yes&reason=useless+note Reject -- http://master.php.net/manage/user-notes.php?action=reject+48876&report=yes Search -- http://master.php.net/manage/user-notes.php