WoW keeps freezing on my brand new 20" iMac (ATI HD 2600 PRO 256MB). No kernel panic it just freezes the the whole computer. The power button at the back is the only fix. I really hate having to do that. The most I get is 5 min until it freezes. Is there anyway to fix this? I'll have to go back to a win PC if this can't be fixed.