Quoting bc98kinney <bc98kinney(a)yahoo.com>:
Lockups can come from bad memory, so I would recommend you run
memtest86 before anything else. Sometimes you have to let it go for
a couple days before it finds anything. A non destructive drive
test like DFT wouldn't be a bad idea either.
Thanks. Asked on a local geek list and they suggested Memtest86 as
well. :) Another "old geek" suggestion was to power down, and clean
the connector edges with a pencil eraser. Think I'll try that as well.