Problem logging on/ "an unknown error has occured"

[newagemystic]

Ive been playing on this server for months, no problems accept for the occasional zone crash which restarting the client would fix. Since this morning I have had problems logging into the server. Some times I cant even get to the character selection screen because "an unknown error has occured". A few times i was able log in the game and i immediately crashed and could not log back in to the server. Ive tried restarting the client, my cpu, my modem, unplugging router. Everything I can think of. Any help is greatly appreciated.