Wrong Cache-Control HTTP Response

[andreitero]

Thanks, I compared them and they are the same. Replaced mine with an original index.php and web-sniffer.net still shows this:

Status: HTTP/1.1 200 OK  
Date: Sun, 19 Sep 2010 03:39:55 GMT  
Server: Apache/2.2.15 (Unix) mod_ssl/2.2.15 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4  
X-Powered-By: PHP/5.2.13  
Expires: Thu, 19 Nov 1981 08:52:00 GMT  
Cache-Control: private, max-age=10800, pre-check=10800  
Set-Cookie: zenid=1cc8241a0860a07be1d798b32274a9d7; path=/; domain=lemy.co.uk  
Last-Modified: Sun, 19 Sep 2010 03:39:32 GMT  
Cache-Control: max-age=0, no-store  
Connection: close  
Transfer-Encoding: chunked  
Content-Type: text/html; charset=utf-8

Also compared application_top.php, which is unchanged.