Taking the administrative rights under users-admin from a normal user can be fatal!!

When you haven't activated the possibility to login as a root user under the
security tab of the settings of the Gnome Login Manager and/or you haven't given
the root user a real password, replacing the randomly created, you won't be able
to make administrative tasks under the graphical enivoronment. When you try to
do such tasks without administration rights a window asking for the password
pops up. If you enter the wrong one (from the normal user) he will tell you and
shut down the application. If you try again it tries to load the application but
in the end nothing happens. If the password was right on the first try however,
I think the whole program is greyed out and shuts down soon with another error
(I can't remember really). This bugs results in that you can't change any system
settings anymore without commandline (and that is pretty impossible for
inexperienced Linux users like me!), so I had to reinstall the whole system. I
think here should at least appear a text window in which stands that you don't
have the administrative rights to access this program or you would have to enter
the root password.

In my head the password system should get changed, the root password should be
used for global settings (Installing packages) and the normal user password for
local ones (i.e. Network, New Session, mount). The system under Debian made more
sense for me.

I use Breezy Badger stable. The version of the gnome-system-tools I have
installed is 1.40-0ubuntu10.