Okay, things are really moving now!

Yes, I do have an i7 920.

Using the DSDT and the kexts you posted with Chameleon 2 RC5_pre8, I can boot just fine. And, I'm now 5 degrees cooler at idle and an astounding 20 degrees cooler at full processor usage!

So, now I'm fully updated to 10.6.4 with working audio. For some reason, though, the input/output devices listed under Sound in System Preferences are all in German:


In System Profiler, they have English names:


Any idea on how to get rid of the German?