Please have a look in /var/crash for any files that might be related to gtk-window-decorator or unity-window-decorator.
If there are any, please do this on the most recent one: ubuntu-bug <crashfilename> ** Summary changed: - Firefox randomly looses window decoration + Firefox randomly loses window decoration in Gnome Classic (Compiz) ** Also affects: compiz Importance: Undecided Status: New ** Changed in: compiz Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1067951 Title: Firefox randomly loses window decoration in Gnome Classic (Compiz) To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1067951/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs