Thanks for the heads up. I'm over at a relatives place for 24 hours so thought I would use their internet and give 10.6.8 a go.
First impressions are not promising on my end. I must be doing something fundamentally wrong here. I have updated to 10.6.8 using the combo updater then replaced the 2 kexts in S/L/E that you upped (SLKexts.zip). I didn't have sleepenabler (but I did have lidsleep) and I have used AppleHDADisabler for quite some time, so didn't remove AppleHDA.
When I reboot, the first thing I notice is how SLOOOW the system is. My battery status icon is gone, my wifi won't work and everything is very very laggy. It's as if I removed all but 512MB of RAM! So I removed lidsleep and voodoobattery from E/E and added the 10.6.7 IO80211 kext to S/L/E then rebooted. No change.
Is there something I am missing here? Is anyone else having similar issues? Luckily, the system I am experimenting on is my Rescue disk not my main install
EDIT: Ok, so replacing my SMBIOS.plist with the Multibeast 6,1 version and Bootloader with the Chimera bootloader from Multibeast has solved a lot of issues. I now have a snappy fast system again. My battery icon has returned, wifi is working and I haven't noticed any other issues except now the system freezes when I wake from sleep.
2ND EDIT:
Ok, it was something really stupidly simple. I forgot to do a "sudo pmset -a hibernatemode 0" - something which I did ages ago on my main install, but not my Rescue System. I use mode 0 (traditional sleep) because of the shutdown issue with the Nvidia card.
Now I have no issues with 10.6.8... so in summary:
1. Installed combo update
2. Replaced 3 kexts in S/L/E (AppleACPIPlatform.kext, IO80211Family.kext, IOPCIFamily.kext)
3. Updated to Chimera bootloader
4. Installed the Multibeast Macbook Pro 6,1 SMBIOS.plist
5. Open terminal and type "sudo pmset -a hibernatemode 0"
6. Repair Permissions
7. Reboot
Happy again. Now I just need to get back on the internet. :/