Sessions don't survive redirects...

This one is short and sweet. Sessions don't get stored in final, and i.php
shows NULL. I've succesfully used sessions in other situations with a test
script. Am I missing something here? auto_start = 1, save_handler = files. A
session file is created with !referrer in it but no value.

August




redirect.php:
----
$REQUEST_URI = getenv("REQUEST_URI");
$url_array=explode("/", $REQUEST_URI);
session_register("referrer");
$referrer = $url_array[2];
header("Location: http://www.cashwars.com/i.php");
exit();

i.php
------
echo $HTTP_SESSION_VARS["referrer"];
var_dump($HTTP_SESSION_VARS["referrer"]);