I got impatient with my Radeon on backorder, so I ordered a Voodoo 5 when I heard about the spiffy rebate and I have this EXACT same problem with my G4/400 and Apple 17" studio display. I spent a weekend trying a base set of OS 9.0.4 freshly installed, to no avail. I would be willing to put up with it temporarily and find a workaround if the performance of the card was good, but frankly, it sucks. For $300 I was expecting a lot more than meager framerates in 3D and buggy 2D acceleration. IMHO this is a decent $150 card with some software issues to work out. For $300, it's going straight back to Outpost and I'll live with the Rage 128 until I get my Radeon...drool...