So I'm stumped...I've tried 4 OpenGL games now on my G5, and nothing survives more than 5 minutes without locking up and requiring a hard system boot! Games: UT2004 Demo America's Army Quake 3 Arena Jedi Outcast 2 Machine: Dual 1.8 G5 2.5GB of top-dollar RAM 2x160GB Seagate Barracuda 7.2 SATA in RAID 0 array. Panther with current software updates Standard NVidia 5200 graphics card Samsung 213T LCD monitor (1600x1200 native) Everything I do on this machine works and works well...except for 3D games...specifically, ones that use openGL. What happens is, I go to any of the games, and begin playing...things look fine...then at some random point (sometimes within seconds, other times only after 2-5 minutes) the screen freezes. Usually the sounds continue and i get the feeling that things aren't totally locked up, but no matter what i do, i can't seem to force-quit the app, and i can't get the screen to refresh...i have not been able to play even a single round of UT2004 botmatch on the G5, because well, it crashes too quickly. I have to run the game in 1600x1200 to avoid blurriness, which is fine, or should be, considering I'm using a dual processor 64 bit "super" computer, but even before the game crashes, i don't have very good framerates (i have all of these games also on PC, or at least demo versions of them, and they all FLY (painfully fast, even) on a 1.8ghz athlon with a radeon 9600 pro and 1GB of RAM. I want to be able to play games on this screen, but my general/gaming machine and my work machine must be in different rooms for a number of reasons...simply put, i want the LCD on photoshop, which i want on OS X, so at least some of the games need to work on the G5...I expected it would be a painless procedure, right? Well, performance, even for the few seconds that i get before the games crash, isn't impressive...it's jerky and fairly crappy. I didn't want to have to upgrade the graphics card in the G5...the Mac versions of the radeon cards are way too expensive except for the 9800, which is out of my price range. basically, what i'm wondering is, do i have something set wrong on my machine that would cause oGL games to totally die on this nVidia card? Isn't nVidia's strong suit supposedly their drivers? extremely frustrated.