If I try 1152X870 (my minimum preffered gaming res on the PC) the game (any game) just quits back to the desktop.
If I choose 1280X1024 I get an out of scan range error in everything but hte SMP beta of STV EF that Brad Olivers posted on his iDisk, maybe this is an OSX bug I don't know (seems to happen uniformaly in all my Q3 engined games & more under OSX, alhtough Cro Mag & Ottomatic run fine at these res.
My monitor supports these resoloutions indead I run my desktop at them nearly all of the time.
Anyone now a tweak to fix this, I'm getting my GF3 soon and what to play games fluidly at high Resolotuions.