Comment 32 for bug 419328

Bryce, i don't see any corruption, but just get a black screen, to reproduce:
* disconnect external screen
* open gnome-display-properties
* press detect displays
* connect external screen
* press detect displays
* get two black screens, frozen mouse pointer on external screen
here a video: http://videobin.org/+dr/g5.html
and a photo of the black screens: http://oil21.org/~j/ubuntubugs/bug_419328.jpg