Well, I've had 2 experiences:
The one I mentioned earlier in this thread I was still quite new and cador, who had tatted me, got so irate I thought I was banned so stopped playing.
I got booted with another char, a little unfortunately because what I was doing would have looked corrupt but was actually a trick to catch a criminal. I carried that char on for ages and was never forgiven.
What happened was there was a Necro criminal wanting to do a mummy quest. He wouldn't try while I was on duty, and I couldn't kill him since he wouldn't come near with his mummy items. So I suggested he bribe me to leave town until I'd gained a rank. In practice, I could summon a mob and rank off it since I was that close to a level, so would have been back in time to manacle and try to kill him. Unfortunately the second I agreed the bribe an imm booted me so I couldn't put my plan into action, and I don't think the imm bought my story (even though it was true). So with me intribbified the Necro became a mummy.