Just downloaded the new zombies trainer for the expansion, and after playing in SOLO for one game a message came up saying "This account is permanently banned from playing on Black Ops 2 servers." I understood the risk going in, but thought that as long as I only played SOLO I would be fine. Not the case apparently, so I'm posting here to warn others not to use it. I only played with it for about 20 minutes before the ban, so guys be smart and stay away from it. On a side note, it doesn't show the ban on my Steam account, so it is just for that specific game.