Weird Crash Behavior

I have the following:

64-bit multicore processor
RAID 1+0
16GB RAM


I've been running the Debian-based Proxmox VE on it for six months or so with no problems.

Today I loaded Centos 5.5 x64. During a reboot, the file system crashed and fsck couldn't repair.

I loaded it again, did all the updates, and loaded my applications. On about the third reboot, it crashed again and fsck couldn't fix it.

I don't really know where to begin. I doubt seriously that any hardware has went bad since yesterday.

So, I'm kind of clueless. I don't want to go down this road again.

If anyone has any ideas, I'm listening.

This sounds like a hardware compatibility issue to me. Can you update the bios on the system? What make+model is it? Is the CPU an Intel, or AMD part? What about the RAID controller driver? Did you install a driver from the manufacturer, or is it the default built-in RAID driver? What RAID hardware is in your system?