Fixed it for me as well.
I used the combo update. Got a KP on restart. I had to remove OemSmbios.kext to get back up and running. Seems ok now.
You should download the edited AppleACPIPlatform.kext from my previous post boot up with -f -x put it on the desktop with Kextbeast and run it then reboot with -f.
::::FOR EVERYBODY::::
THIS METHOD HAS WORKED THROUGH ALL THE 10.8.2 BETAS AND WORKS 100% NOW
THIS FIXES THE OemSMBIOS PROBLEM WITHOUT HAVING TO DELETE IT FROM FAKESMC.kext
THIS MEANS YOU WON'T LOOSE YOUR SYSTEM DEFINITION AND SERIAL NUMBER WHICH WILL CAUSE PROBLEMS WITH SOME APPLE SOFTWARE AND ACTIVATED 3RD PARTY SOFTWARE.
IF YOU HAVE CONSTANT SPINNING WHEEL OR ARE RECEIVING ERRORS ABOUT OemSMBIOS.kext THIS WILL LIKELY FIX IT.
SOURCE:
http://www.insanlynac.com/forum/index.php?showtopic=282162&view=findpost&p=1852962
I have a GA-Z68XP-UD3 MB. I update to 10.8.2. And is up and running. But audio, does any body have the same MB that can tell me wish driver on multibeast to choose, thanks. That's all I need