ATIsb600 support doesn't work at all..
even with the installer

You can install with Pacifist as well.

Thanks Hara, Pacifist worked like a charm. Never even crossed my mind to try it.

I'd like to request that the final ppf include pre Quicktime 7.5.5/iTunes 8.0.2 (but later than itunes 8.0, i love genius) for those of us using nvidia 8xxx series graphics cards. The mouse lag is a small annoyance but it has me using my laptop for music. Hopefully Apple will fix this soon.

Glad it worked.

Care to share how you have your 8x00 card working? I.E. injector, EFI string, etc...

Using graphics strings via EFIStudio right now. I had the same problem using NVkush. I also tried NVDarwin default but didn't have CI/QE using it.

You should try adding your device ID to the proper nvidia kexts and see if that does anything, that's how I got my 512MB AGP 7600GS card to work.

Well the card works great except for the mouse lag when i'm running the latest itunes or quicktime. It's a fairly common bug with the 10.5.6 8xxx graphics drivers and latest versions of quicktime and itunes. From what i've read it only seems to be affecting cards with g84 or g92 chipsets.

Do you get this issue when using 10.5.5?

No it is an issue when using the 10.5.6 graphics drivers in conjunction with quicktime 7.5.5 and or itunes. Rolling back to an earlier version of quicktime or rolling back to 10.5.5 graphics drivers fixes the problem.

That's probably the only fix that I can suggest then. When I had my FX5500, I couldn't even boot with 10.5.6 kexts, I was forced to use 10.5.5, and I was perfectly fine with it. As long as it works for you and there's no real issues otherwise, I don't see the problem with it (unless you are the type who MUST have everything the latest, like me lol).