Today I headed down to the colo after work.  I swapped out the mobo, proc, mem, and sata controller in apoc.  So far things seem to be a bit more stable.  However, I made a number of other tweaks that may have fixed the instability. On the new board, I disabled hyperthreading and onboard usb. Unfortunately this board doesn’t do dual-channel ddr and only has three slots instead of four for ram.  I would eventually like to get the original board back in apoc, but only after extensive testing at home.

Here’s to hoping we get a stable Xen box soon.