There is a hacker who peroidically tries to log in. When doing this he floods the server with requests so noone can login. The program keeps I.P banning and kicking him but he keeps changing his IP. Try again in 20 mins if you can't login. This will be fixed when the new server version is released because you will need to register before connecting to the server. Just try again Dualdes and see if you can login now.
r3n