PROBLEM: Kernel 2.6.10 crashing repeatedly and hard

Hi all,

I've been moving things on my server to use software RAID5 of the LVM,
trying out to use the device mapper (dm-crypt) on top of that with an
ext3 filesystem and have seen repeated hard crashes. The machine was
entirely dead.

Since the machine was quite stable for a couple of days with 2.6.10
before moving to the software RAID setup, my suspicion is that it is
related to either LVM, DM, EXT3 or any combination of the three.

This is what I could preserve in output from the crashes: