Seems like a lot of people are having an issue logging into chat since we updated. Here is what you need to do: Logout of the chat and forums,
clear your cache and cookies. Log back in to the forum, then login to the chat with the same user/pass you use for the forums.
hope i can get in touch with you and get to know you better (you can take a look at my profile) and let's see how we may progress from there! Cheers!