Gnome 3 child process inheritance problems Number 2

[mcforum]

palimpsest doesn't ask for root password so while it runs it is useless.

Switching a terminal window to a root terminal with su -

Attempting to start any gui program gives a sequence-
----------------
There are multiple lines

 No protocol specified

ending with

Display localhost:0.0 unavailable
The environment variable $DISPLAY in the child terminal session has 
localhost:0.0 


Tried variations on the DISPLAY setting :0.0, :0, localhost:0  but doesn't help.

Ideas?

New Data--

Starting a child terminal window with sudo allows gui programs to find the 
display.

Child gui programs requiring privilege started directly with sudo work as well.
 
What would this be filed against in Bugzilla?

Robert McBroom