I managed to install Mac OS X 10.6.3 w/o much hastle with iBoot, and a retail OS X DVD, but when I update to 10.6.7, and install Multibeast, after the reboot I either get:
kernel ACPI_SMC_PlatformPlugin::start - waitForService(resourceMatching(AppleIntelCPUPowerManagement) timed out (when...