How is the code different between the two entry points?
Your server sends the same headers for both...
HTTP/1.1 200 OK
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Date: Thu, 16 Dec 2010 12:15:04 GMT
Server: Apache/2.2.3 (CentOS)
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0