Currently the past hour Minecraft is performing a "Big" update. No information has been added to there website but I'm sure it will be clear soon. If you are already in a server. DO NOT leave it. If you leave it you cannot join back in until there done with the updates. In the mean time surf around forum post or something... But whatever there doing. Its going to be big.
Yeah, this update makes me slightly nervous. It was unexpected and never mentioned..? It could be a huge mistake on their part. But being optimistic is great! A huge update and bug fix would be amazing.
There was a broadcast about this on the servers. Geeves apparently broke something and they were fixing it, that's why no one could get on. Something with the authentication stuff, I believe, so no update. Sorry to get your hopes up. :/
Geeves Didnt break anything. That broadcast was a troll. Mojang's Authentication Servers were down as were the login's Mojang's fault :3