I have 2 PCs that 10.5.1 Rev1 worked fine on. However, this dvd doesn't work on both, I get "still waiting for root device" (before installation). I guess this is a problem with AppleNForceATA.kext!?

1.
Shuttle XPC SN21G5
AMD 3800+ (Single-Core)
GeForce 8600 GT
S-ATA BluRay-Drive
S-ATA/IDE hdd (tried both)

2.
MSI K8N Neo4 Platinum
AMD 4000+ (Single-Core)
GeForce 7800 GTX
S-ATA dvd-drive
S-ATA hdd