Ran combo updater, rebooted, it seemed to hang on PCI Configuration Begin.
But the HDD led kept flashing, it was booting anyway, except nothing happened on the screen.
I was able to restart blind using the keyboard.
Booted into my 10.6.3 install DVD partition, replaced the IOPCIFamily and AppleACPIPlatform kexts with ones from 10.6.7, fixed permissions. Booted fine this time, but I lost hardware accelerated graphics!
Installed the latest nvidia quadro drivers...http://www.nvidia.co...f01-driver.html
...rebooted, got hardware acceleration back.
Obviously AppleHDA + controller.kext need to be repatched as well.
/EDIT Arrrrghh, the Perl script that patches AppleHDA for AD2000B no longer works!! I opened up AppleHDA in a hex editor and the numbers that I'm supposed to patch are no longer there. At least AppleHDA from 10.6.7 still works.
Hopefully someone can figure out this new PCI Configuration Begin/ACPI stuff in 10.6.8.
I saw some reports from people being able to boot by typing DSDT=no...very strange, unfortunately I forgot to try that before replacing kexts.
I still have my 4 P-states but I don't see any CSTInfo in IORegistryExplorer anymore and ioreg -lw0 | grep CSTInfo
Asus P5Q-E (ICH10R/P45) C2D E8500, Geforce GTX 460. MacPro3,1 model identifier, retail install, latest Chameleon.