Comment 34 for bug 634701

Adding to what Martin Zackrisson said, every time I close Firefox with no other window open mutter seems to go blank. If I have another window open this problem doesn't happen. If the other windows minimized first, the problem occurs. I can get mutter/unity back by pressing ctrl+alt+T and launching the terminal when I have the blank screen with only a mouse cursor. So it definitely seems related to widows,,,hop that is helpful. Let me know if I can be more clear.