Banning is a bad idea. The correct solution is to put a 20-30 second delay on players logging out. I say banning is a bad solution because my internet connection is fucking terrible, I DC all the time whenever my internet hiccups, which happens at least a few times an hour. I had to give up even playing tonight because I can't stay connected for more than 5 minutes at a time. Long story short, banning for DC would punish the hell out of people like me. I'm fine with my body being killed if I DC in a fight, i know the risk of playing with my connection. I'm not fine with being banned from a server because I live in the boondocks with no ISP options.