On Fri, Mar 8, 2013 at 12:33 PM, SilverTip257 <silvertip257 at gmail.com> wrote: > If it's not memory related (test this memory in another system) then it is > probably a motherboard failure. I've seen weird symptoms where the system > will boot fine, but once the Linux kernel begins to build its cache it > triggers a lock up/throws an exception. :) I've also swapped the motherboard. *Every* component except for the case and the SSD boot drive has been swapped. This is going on now for almost two weeks. I will try your suggestion of trying a separate set of banks in the off chance that those slots are faulty.