10.5.7 update working well from iPC 10.5.6 initial Vanilla install

Hardware:
Intel DP43TF, Q9550S Core 2 Quad, 6GB DDR2-800
XFX GF 8600GT 256MB, HP SATA DVD, Western Digital Caviar SATA drives

10.5.6 install required:
-EFI Studio applied boot string for GF 8600GT (QE/CI/QGL all working)
-ICH10 storage kext selected on install
-Intel 82566 ethernet kext selected on install
-SMBIOSResolver selected on install
-Patched USB Drivers selected on install
-Required a kext from www.kexts.com to support the ALC888vc audio codec
-Had to disable AppleUpstreamUserClient.kext to fix the jumpy mouse/stuttering Quicktime video bug.

After 10.5.7 update (By downloading the Delta update, not by Software update), some things improved:
-No change required to EFI boot string for GF 8600GT- continued working as before
-ICH10 storage kext no longer needed!
-Did not need to reapply Intel 82566 ethernet kext (not overwritten or now has native support, unsure which)
-Did not need to reapply SMBIOSResolver (expected since it leaves vanilla untouched?)
-ALC888vc kext from www.kexts.com no longer needed!
-Did have to reapply Patched USB drivers from iPC 10.5.6, otherwise external USB drives failed to connect
-STILL had to disable the AppleUpstreamUserClient.kext. Jumpy mouse/Quicktime video problem came back immediately after 10.5.7 booted.

In 10.5.7 just as in 10.5.6, Sleep does not work for me. System either turns off or a message pops up telling me to turn it off (and in 5 different languages, too). Disappointing since this board is on the HCL on wiki.osx86project.org as everything working, including sleep. But I can live without that feature.