Kernal Panic

I’m running Asterisk@Home with version 2.0
When I shut down or reboot the sytem say Kernal Panic and the system hangs until I power it down. It runs and operates without and probems just when I want to reboot. Is anyone else having the same problem? or know what the problem is?

I encounter this situation before when i installing CentOS-3 into my Asus Motherboard, and it goes fine when I running on CentOS-4 with the same motherboard.
My experience it just the reference for you.