The above change allows you to log into root, but when you try some 
commands, such as looking at what services are running, 
and try to modify what is, or is not. you are blocked

From: Adam Pribyl <pribyl@lowlevel.cz>
Subject: Re: Root Privelages
To: "For testers of Fedora Core development releases" <fedora-test-list@redhat.com>
Date: Thursday, November 20, 2008, 5:16 PM

On Wed, 19 Nov 2008, "Jóhann B. Guðmundsson" wrote:

> Patrick O'Callaghan wrote:
>> On Wed, 2008-11-19 at 10:29 +0100, sschroeder wrote:
>> 
>>> Is there any way to gain root access in GNOME to do things
 that
require root authenication (moving files for example to the /usr/ folder,
without:
>>> 	su - sudo su -
>>> 
>>> Doing that gets annoying, since I have to do that, go to something
that prompts for the root password, type the root password AGAIN, and to boot, I
can't choose when I want the authentication to expire, it just goes away,
making copying a large number of files very difficult.  In Fedora 9 you could
log on as root (which I understand why they took it away, but you could choose
to keep root authentication), is there a way to anymore?
>>> 
>> 
>> Is there some problem in simply running 'su' and getting a
root shell?
>> 
>> poc
>> 
>> 
> Remove "user != root quiet" in /etc/pam.d/gdm
> 
> And you have a root login from GDM

Does this work for you? I tried that and nothing changed.. still no root
 login.

> 
> JBG
>