Comment 13 for bug 237604

This has happened to me while I was in Skype, emacs and gnome-terminal, so it doesn't appear to be a firefox issue. It doesn't appear to happen in KDE or XFCE, but I haven't done extensive testing. The most likely culprit appears to be gnome or metacity. I'll restart X with xev and try to attach clean logs. The problem also appears to have started in the last couple of weeks -- perhaps related to a system update? The problem may have appeared after a system reboot, so any update after Dec 14th is suspect.