Machine froze during the first pass of rember. That could be telling. I didn't have the log screen up when it froze, so I don't know what might have happened. Running again now.

UPDATE: It froze during the 2nd test. I let the machine sit there with the frozen screen for a while. After about 2 minutes, the fans started ramping-up speed. I shut it down and will be investigating my memory options tomorrow. Good night.