Heads up to anyone upgrading from Ubuntu 7.10 to 8.04. I had no problems running wow on Ubuntu 7.10, but on 8.04 wow will freeze your whole system after about 5 minutes of gameplay.
I can't really understand it yet, I will try to reinstall everything, including cxGames (maybe something messed up on the upgrade).
Let me know if anyone has a solution I can try.