Ubuntu 11.10 "Oneiric Ocelot" reached EOL on May 9, 2013. See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases
Please upgrade to the latest version and re-test. ** Changed in: xfce4-panel (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/951564 Title: 'BadWindow (invalid Window parameter)' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-panel/+bug/951564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs