For whatever reason, I am not able to in-game chat; whenever I try to reconnect, it says that i have disconnected. i believe this is linked to me not having an IRC key, because when I made a new account, that one was able to connect. I hope someone is able to fix it, because I don't want to make a new account and I want to be able to chat. Thanks!
I have the same problem. I can connect via mibbit (http://widget00.mibbit.com/?server=128.95.1.227&channel=%23global), but the in-game chat cannot connect.
This is at least the 3rd person with this problem in the last month, I think it should be tracked down.
http://fold.it/portal/node/995183
Very sorry for the inconvenience, everyone. We'll do some extra investigation into this.