What's wrong with this acl?

Hi,
I have the following in my squid .conf, can anyone tell me whay it isn't
working? That is the sites are still served up.

acl chatrooms2 url_regex "/etc/squid/acls/chatrooms2"
http_access deny chatrooms2

The file chatrooms2 is:
\.LeagueChat\.
\.Chat\.
\.chat\.
\.chat_email\.
\.Chat_Rooms\.
\.chatroom\.
\.General_Chat\.
\.hnchat\.
\.voicechat\.
\.Teenchat\.
\.memberchat\.

I know it is being parsed by Squid as if I make a deliberate mistake in the file
Squid complains. There is nothing in the log except the entry where the
pages are being served up.

http://www.blueandgoldarmy.com/Chat/chat.htm simon
DIRECT/www.blueandgoldarmy.com text/html
958877654.304 147 192.0.0.52 TCP_HIT/000 0 GET

Shouldn't this site be barred?

Cheers,

--
Simon Bryan                    sbryan@olmc.nsw.edu.au
Information Technology Manager sbryan@mpx.com.au
OLMC Parramatta