FC11 logging in as root - FC10 change not enough?

[Robert Moskowitz]

At times I find I need to login as root.

For example, as a regular user su to root, then start gedit from that 
terminal session.  Look at all the errors generated.  And at least in 
FC10, I could still change preferences, but in FC11, they all come up 
grey.  There are other things in gnome that don't launch right from an 
SUed terminal session.  So when I want to 'fix' things, I find it better 
to just log in as root.

So in FC10, I learned to edit (with VI cause at least THAT works in the 
SU terminal session) /etc/pam.d/gdm and trim off the end of the 2nd line 
that has pam_succeed_if.so

Well I did that, and logged out as me and could not log in as root.  So 
I rebooted (perhaps needed to restart some service) and still could not 
log in as root.

So what is the magic incantation this time around?  And why is it 
getting harder to enable this?

Sigh.