Well, first off I want anyone willing to help to know that I have a complete bootable backup drive just for testing OSX updates. So there is no worries that I will crash my main system.

That said. On my main drive I have 10.5.7. My hardware is:
* a Gigabyte P965-DS3 (rev. 3) mobo. It has ICH8, ALC888, the infamous JMicron controller, and a Marvell Yukon 88E8056 nic.
* Graphics card is ATI 3870 512 MB.
* 6 GB of DDR2 667 RAM
* Kenesis freestyle keyboard made for Mac OSX
* Kensington Expert Mouse with OSX drivers
* Kesington Bluetooth dongle
* a Dynex 4-port USB PCI card
* a Dynex Firewire 800/400 card
* a SiliconImage 3132 2-port RAID card (controlled by the SI drivers from the site)
* I use a Linksys Wireless-N USB wifi adapter for internet right now and it is controlled by the current Ralink drivers.

The hacks I have are:
* Chameleon 2 RC3
* an EFI string in the boot.plist for the TimeMachine fix;
* LegacyAppleAHCIPort (patched with/for JMicron), LegacyAppleYukon2, LegacyIOAHCIBlockStorage, OpenHaltRestart, current VoodooPower, Disabler, AppleDecrypt, and Natit (for gfx).
* I also use an old skippyretard installer for audio that patches AppleHDA (works fine for me) and a JMicron installer to install a newer JMicron kext.

The kexts are all in the main extensions folder. I never had good experiences utilizing the Extra folder. Everything works fantastic including sleep, shutdown and restart. I am a little late in the 10.5.8 update rush because I had some pretty major tragedies go on in my life a few months back. I am back in the the hackintosh world, so to speak, and tested the 10.5.8 update on my backup. Everything but sleep and shutdown worked. I fixed sleep with the pista7 sleepenabler.kext. For the life of me, I cannot figure out why shutdown doesn't work. The system logs out, I hear a click in my tower, the spinning wheel spins, and then the monitors shutdown completely. The fans and LED's on my tower keep right on truckin' though.

Anyone have an idea what is causing this and what I should tinker with?

Thanks,
Jeff