Comment 3 for bug 1007352

I don't know how they got in the state, but two applications (Thunderbird and TortoiseHG) got very stuck in fullscreen mode (not just maximized, but 100% of my LCD). No amount of F11, maximize, moving, rebooting, etc. would unstick them. I worked around it by editing config files (.thunderbird/<profile>/localstore.rdf and .config/TortoiseHg/TortoiseHgQt.ini), but it was a pain and a simple alt-F11 configured in System Settings would have REALLY nice, especially if it happens again.