It seams that the server are getting hacked. Don't worry it's not your fault if you cant join a server and get this weird error. It will probably be fixed soon. This error has gotten me mad and you probably mad too. Whoever is hacking needs to get a life because he is messing up like 8 million pc's. This error only occurs if your trying to join it. If your currently on it, you wont get kicked or anything. SUCK MY DICK HACKERS! YOU SUCK