But — one spontaneous reboot. Address Book hangs on first run. The migration utility took forever and silently gave up trying to transfer my music and photos over, I had to do those manually. Had to boot into the repair utility to fix some “strange permission problem”:http://osxdaily.com/2011/11/15/repair-user-permissions-in-mac-os-x-lion/. Software Update tool failed updating iTunes twice.
Not conclusive yet but something seems a little off.