Trying to install OS X 10.5.2 Kalyway on this setup:

Tyan S2881
2x Opteron 2 GHz s940 CPUs
80 GB WD IDE drive
Samsung DVD IDE drive

The installer loads beautifully, seems to work great. I partitioned the drive, selected it for an install, and the install began. But after it got like 1/8th the way there, the DVD drive was still spinning, but the light wasn't blinking. I gave it plenty of time, on two attempts, and the installer wouldn't get farther than as shown below. I can still move the mouse and all that, it isn't frozen, it's just stopped. I also tried using a SATA DVD drive (if that even matters) and the disc wouldn't boot right.

Any ideas?