Why Restart & Shutdown Buttons on login screen

[Ralf Corsepius]

On Fri, 2008-04-25 at 07:16 -0500, Aaron Konstam wrote:
> On Fri, 2008-04-25 at 14:02 +0530, "Rahul Tidke" wrote:
> > Hello All,
> >   I wonder about these buttons on gnome desktop; do we really need these
> > buttons on login screen? Reboot and shutdown allowed before login for any
> > user??
> > 
> > Thank You.
> I find these buttons very useful. My machine double boots. Sometimes I
> make a mistake  and allow the machine to boot to the wrong OS. Using
> these buttons I can correct the situation. Other times I boot my machine
> and I realize before I login that I really wanted to shutdown the
> machine.

"your" machine => single-user environment.

> But I confused by your question. How does this extra functionality hurt
> you or anyone else?
Do you expect arbitrary users to switch off an unattended ("free")
machine in a lab's or an office's machine pool, a classical workstation
scenario?

Q: How to disable these buttons permanently?

Ralf