I rebooted it at about 1am when no one was playing, think I must have launched it with the wrong shortcut (they're next to each other and I was tired, OK? :C ) :$
I log in, connect to server, it starts loading chunks, and then kicks me out with a java exception. :(
I'd thought this was caused by stupid T-Mobile cutting non-web Internet, but now I dunno if they're just being bastards or if it's some other cause.
Googling the error results in lots of different reasons for it, though a common one is a server/client mismatch - I assume if that was the case here then the rest of your would all be having problems. :/
As the server seems to be working fine for everyone else (by which I mean me and Caer), I'm choosing to believe it's your end and will stop fiddling now.