it says " We are unable to connect to the login server due to a server check, a firewall block or other network issues"
As of about a half an hour ago, Matt made a statement in the shoutbox that the login server went down on the side of the server host, and that they opened a ticket and are waiting for a response, anybody still online can continue playing, the rest of us have to wait for the host to respond to the ticket filed by Matt.