We get the samething on UT. Funny thing is though. They tried it on our clan server and I was the only one logged in with admin rights at the time. Some lamer came into the game and said he was the admin and needed everyone to email him their passwords for our private matchs on the server. I kicked him and then he came back with another nickname. Doooh. What an idiot. Kicked hime again and ban his IP for two days. It takes all kinds.