Comment 5 for bug 137904

Removal and re-installation fixed Thunderbird. The reason I enabled the restricted drivers was because I was getting flickering and flashes of the wallpaper showing through windows on the right side of the screen. That has stopped now. Looks like the bug has to do with the open source ATI drivers conflicting with the workspace switcher? How it caused Thunderbird to crash I have no idea, but it looks like I'm fixed for the moment.