This is the second time this has happened to me this week, never before. When I return from sleep, instead of getting the login screen, everything is black and the system completely reboots. When I return, I get the "The computer was restarted after Mac OS X quit unexpectedly" error. I took a picture of both. Can anyone decipher what either of these mean? The second looks like a kernel panic, which I have never had on my system (since 4/07).