just to help out a little, thats what he linked to.
its not a realm down, normallyt his occurs from a strange occurance [IE lag dropping you from game] and lasts for 5 minutes normally, but actually today my brother got that and couldnt join for an hour.
anyways, its not a RD, and not Mh related, its mostly due to lagging out of games or hitting esc too fast, etc etc.