Yes, I know, but at the moment I have no recourse against him. He uses VPN in connection with a proxy server. I can't lock him out this way at the moment, but we're looking for a solution.
The only thing I can say is just don't pay any attention, kicking him off the server doesn't help either because he reappears a few minutes later. The less attention he gets, the higher the chance that he'll get bored....
