Sorry for posting here, I just want to clarify some things to cool3 that maybe he doesn't know.
@Cool3, this guy waited for his ban to expire, his ban expired and he started to play with another nick, maybe you were confused to see that he was playing with another nick and you gave him ban thinking it was ban-evasion, If there's some system/admin panel you will be able to verify that he really waited his ban expires.