Mac gameplay problem I just installed Sim city 4 and began playing. The tutorials worked fine and I was able to begin a city. I began and after about 5 minutes of play my city started to go black. The interface was still visible but the city went black. I then scrolled around for a while as the black just kept popping up making the game unplayable. It reminds me of the black wall of death in Diablo II when the game would lag. If anyone can offer me some guidance as to what graphical alteration I must make or anything let me know. I'm operating a G5 dual 1.8Ghz with 1.25Gb Ram and an ATI 9600 XT with 128Mb VRAM
