I've updated the forum to the latest software revision, please let me know of any problems.
The chatroom should automatically log you in providing you are logged into the forum, however if you log out (or get logged out) then you won't be able to log in using your forum username and password. The workaround is for you to close the chat window, and then open it once again.
I'll look to correct it sometime, but I'd rather leave it like this for now to force people to register to use the chat and therefore avoid the problems of recent weeks.
The chatroom now opens directly from the forum to save you navigating to a new page. On all other pages it remains as it was to direct users to important information regarding the chat.