Article: OS X 10.8.5 Update
Got mine working finally on 10.8.5. Couple of issues, Asus Rampage II extreme, i7 920 processor, NVIDIA GeForce GTX 650 Ti 1024 MB setup.
1. AppleACPIPlatform.kext creates the slowboot issue and so need to restore it from a previous version
2. GraphicsEnabler=No...