Hello, I am playing COD4 on a unibody 15" macbook pro, everything looks great on max setting ACCEPT for when I put anti-aliasing on, my video card renders "heat distortion" such as heat coming off a fire, a big gun, from behind the tank as a bizarre reversed mirror reflection of my POV. I wish I could upload a pic. Is anyone else experiencing this and know how to fix it? It becomes quite annoying as it completely blocks my view if I'm standing in front of "hot air". I can't see through it when I should be able to. It doesn't happen when anti-aliasing is off... is this a glitch, my computer, or am I doing something wrong? Thanks!