Admin Forum:Blocking Users

Hey, awhile ago we had a very, very bad user on our wiki, and he was blocked. But he keeps finding ways around the IP blocking, so I was wondering if there was any other way to prevent him from creating accounts again. Drewlzoo(talk)
 * The autoblock only lasts 3 days, I've looked into the user and blocked his IP --  Random Time  17:33, December 12, 2011 (UTC)
 * And remember be thoughtful.