Thanks for reporting this bug and help to make ubuntu better. That's because you save your session (System -> Preferences > Session). You have to not save it and remove the saved one (~/.config/gnome- session/saved-session)
That's an upstream issue in gnome-session (please report it to upstream bugzilla), but not related to mutter. I had to patch the UNE session to avoid such an issue, but it's more a hack than anything else and don't want to generalize to the full desktop… ** Package changed: mutter (Ubuntu) => gnome-session (Ubuntu) -- Two instances of mutter at start-up https://bugs.launchpad.net/bugs/660272 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs