System clock and A/V run too fast i7 860 10.6.2
I recently upgraded to a P55 i7 860 rig. Installing iDeneb 10.5.8 lite was a breeze with everything (except sleep, damn you Sapphire 4870HD) working 100%. To my surprise installing 10.6 was almost as easy; installed PCEFI 10.5, fixed DSDT.aml bios reset, all necessary kexts in /extra folder and Qoopz Kernel. After updating to 10.6.2 the vanilla kernel now worked (along with everything else). Yay!
The only problem is that in 10.6.2 (possibly 10.6.X but I updated after fresh install) the system seems to be at 1.5X speed. System clock and video/audio playback run too fast, and certain apps that rely on the time (WoW) hang the system up, needing to do a hard reset. I switched back to the Qoopz kernel and it too is the same. I have not overclocked anything, and need NullAppleCPUPM.kext to avoid KP on startup*.
* KP on CPU07 has no HPET assigned at the moment it's about to go to desktop, which is odd. I am assuming i7 860 run vanilla kernel due to Apple releasing the new i5/i7 iMacs (drool), so in theory AppleIntelCPUPM.kext should also work by default.
I have looked around other forums on this subject and got little results. I guess I am one of those unlucky early adopters of a P55 i7 860 Hackintosh. Reportedly i7 920 users had this problem on X58 chipsets, so I am hoping someone here might have a solution. Believe me, you'd be a hero to many.