yxh's kexts do seem to work okay. Since wiping my CMOS trying an SL install, I reinstalled this system WITH ONLY 2 GIGS OF RAM using yxh's kext pack and all seems to work okay (including sound) without the DSDT. The problem that I am now having is the onboard video providing sh*ty playback through plex of hi def mkv's. Anyone else using this board as an HTPC rig? The HTPC rig in my sig, though much less powerful, blows this board away. I'd like to figure out why. Could it be the video driver?
It's the AppleUpstreamUserClient.kext, rm -rf it and you'll be happy with it.