Noob here, but a hardworking one. I've searched all the forums, for like 2-3 days, tried:

Voodoo kernel
Openhaltrestart.kext
AppleACPIPlatform.kext (1.0.3)
AppleACPIPlatform.kext (1.2.1)
Applepowermanagement bundle fix.

All doesn't work, the issues are similar to what others have described. Powers off, but fans are still running.

When I click sleep, the system shutdowns instead, and everything powers off properly...

My specs:
Jas 10.5.4
StageXNU 9.4.0
No EFI

BIOS Settings:
MaxCPUID=disabled

Pentium 4 Prescott w/SSE3
MSI 865PE Neo2 (Intel ICH5 chipset)
Inno3D GeForce 5500FX (working using Titan)
RTL8139 Ethernet

In verbose mode, the shutdown issues kextcache didn't act on SIGTERM

Anyone?