[CentOS] Disabling shutdown and suspend for normal users

Wed Sep 19 15:18:28 UTC 2007
Ken Godee <ken at perfect-image.com>

>   For Reboot and Halt this works. Setting SuspendCommand= does nothing.
>   Suspend still shows up in the menu, and hangs the machine.

Create your own GDM theme and customize exactly how
you want it. Here's ours, users have no access to
anything but logging in.