The server is having harddrive troubles again; one of the drives just suddenly died. I'll need to take it down later on in order to have it replaced, but unfortunately I don't have time to do so right now (I saw it right on my way to bed).
Since the game data is redundantly stored, there should be no danger to the world or any characters. However, I'll be having the game server itself shut down in the meantime just to be on the safe side. It is possible, though not yet certain, that minimap data will be lost.