The servers crashed!
Words from a Jmod:
When a server crashes your character will be logged out but will still be locked in that world until the sever can be brought back on-line. This should only take a matter of minutes however in extreme circumstances it can take hours.
You will be locked into the sever to prevent you losing any unsaved information, in a worst case scenario the sever will perform a roll back to the last known save which most of the time is just 15mins before the sever crash. While locked in the effected account will be unable to log into any other severs to prevent corruption of your game data. You can still login with any other accounts you have on available worlds.
It might appear that somebody else is using your account, but dont worry nobody is
Besides, I believe World 144 is back up and running already and hopefully nobody should be having problems logging in any more.
Hope this helps,
Conclusion!!!! No more cws at w50! haha.
haha excuses.. help me check world 13 ok ma