I've sent you a pm, amity
For the rest that used this:
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* Click on My Account
Allow Chat Room to be used from this website only:
http://www.yoursite.com/path/to/chat.php
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Well, don't do that. This setting in combination with chat.php can (and fairly regularly will) cause your users to get a message that chat cannot be accessed from that page. The reason for that is that chat.php uses variables in the url to call chat.