[UM-LINUX] php $_SESSION

[Alexander Mahabir]

 php 5.1.2
$_SESSION variables are unaccessible, and not listed in phpinfo(); anyone has any clues what might be up?
<?php
        session_start();
                print "PHPSESSID" .$_SESSION["PHPSESSID"];
        phpinfo();

?>

register_global off
session.auto_start on.
etc.