Comment 6 for bug 783733

Can someone, when this happens, do the following (print):

ctrl+alt+print+r
ctrl+alt+F4
(login)
Enter: "top", hit enter.
Press "Q" on the keyboard.
List the top 5 processes (write down), and the %cpu each is using.

"sudo shutdown 0 -P" (safely shuts down the computer, but you still lose unsaved documents)