ver.di is doing it right!

[root@unitedgamesfactory ~]# curl -I www.verdi.de HTTP/1.1 200 OK Server: nginx/0.6.11Date: Tue, 21 Jun 2011 09:38:46 GMT Content-Type: text/html; charset=utf-8 Connection: keep-alive Content-Length: 35103 Expires: Tue, 21 Jun 2011 09:24:48 GMT Last-Modified: Tue, 21 Jun 2011 08:54:48 GMT Cache-Control: max-age=1800 Age: 2638 X-Cache: HIT from www01.verdi.de X-Cache-Lookup: HIT from www01.verdi.de:88