On Wed, 01 Aug 2001 11:10:27 -0300 "Rodolfo J. Paiz" <rpaiz indahaus com> imparted to us:
> Why can normal users lock their screen in GNOME (in RH7) but root > can't? It would be even *more* valuable for root...
man xscreensaver
In a nutshell, it's considered a security problem.
-- Rodolfo J. Paiz rpaiz indahaus com