Dunno if it makes a difference with non-Voodoo Intel setups, but try booting with -legacy and reloading the installer.
My guess it you're using Vanilla kernel. Perhaps you have a bad driver for something.

---

Custom Hackintosh...AMD Athlon X2 5000+ (2.6 GHz) on GA-MA78GM-S2H...Linksys WMP300n Wireless...ALC889a sound...ATI HD 3650 PCIe...1 GB DDR2 RAM...320GB Western Digital SATA + 200GB Seagate IDE HDD...Rosewill DVD-RW IDE...Running Kalyway upgraded to 10.5.7...All Fully Functional