OK, I experience the same behaviour for other applications that require sudo. Thank's a lot for the help.
** Changed in: gui-ufw (Ubuntu) Status: New => Fix Released -- Can't enable firewall by means of Gufw via the System->Preferences https://bugs.launchpad.net/bugs/392113 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