I'm Running Red Alert 3 on the top spec 3.06Ghz 24" iMac with the NVIDIA GeForce 8800 GS 512mb and 4GB RAM. Am experiencing a problem with the graphics when set on "HIGH" or "ULTRA HIGH". The frame rate and response seems to drop considerably to the point that the game is un-playable, but seems fine set on "MEDIUM". This seems like a glitch taking into account the difference in performance between medium and high, and considering i have the highest spec graphics card an iMac can hold! :/ N e one else got this issue? Sucks huh?!