$ sudo apt-get install --reinstall gnome-system-tools did fix that error for me
-- users-admin fails to start from netbook-launcher https://bugs.launchpad.net/bugs/425453 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-system-tools in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
