I have a backup script that runs in the background daily on my linux (Fedora 9) computer. If the computer is shut down while the backup is in progress the backup may be dama
If users are going to be shutting down via GNOME/KDE, just inhibit them from doing so.
http://live.gnome.org/GnomePowerManager/FAQ#head-1cf52551bcec3107d7bae8c332fd292ec2261760