It seems there are a few people having problems coming into the chat recently. The best way I know to fix this is to delete your temporary internet files and cookies. Make sure when you go back to the login screen, you click yes on the popup box from jpilot. That is a necessary part of the java chat system. If this advice does not work, please post here and I will do everything I can to help you.
Yes, i am having a few problems getting into the chat and deleteing temps didn't help :( but i will just wait a few minutes and try again and i hope that works ;).
Just boot Bob out that'll fix it. :P j/k