Just Archived and Installed

I've been having random crashes since I've upgraded. It's been ugly. Often, after I reboot, the system would crash over and over for 45 minutes to an hour. Right when I got through to Applecare, it would be working again.

When I called last week, they had me repair permissions. That didn't do anything. Today, they had me do an Archive and Install. So far, no crashes. We'll see from here.