I just upgraded to system-tools-backends 2.6.0-5 and this did not fix this bug for me.
I still get the same error when launching gedit and nautilus from a root terminal, as when I submitted this bug. Update launcher stangely now launches without even asking for a password. Time and date settings settings launches, asks for password, but I can't adjust anything. When I upgrade system-tools-backends, these packages were also installed: libpolkit-dbus2 libpolkit2; and this package also upgraded: gnome-system-tools to 2.22.1-2. Meanwhile, people at forums.debian.net (http://forums.debian.net/viewtopic.php?p=218881) still seem to believe the problem is with gksu and not system-tools-backends. For some users, upgrading to gksu 2.0.2-1 solved the problem, although that did not work for me. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org