[CentOS] kernel panic this morning

When I came into work this morning the console had the following:

bio_endio __end_that_request_first scsi_end_request scsi_io_completion scsi_finish_command scsi_softirq __do_softirq do_softirg do_irq command_interrupt default_idle cpu_idle start_kernel

Panic

I am running software RAID-1 on this machine. I had 2 IDE disks and the machine when down once in a while with similiar messages. I switched to brand new 300 GIG SATA drives and now I am seeing the same kernel panic.

What might be the problem here?

THanks for any suggestions.

Machine has 2 GIG RAM, Intel motherboard, Intel CPU 2.4 P4, "/" is 50 GIG, I have a 5 GIG Swap, and the rest is "/home". where / and /home are RAID-1 arrays.

Jerry