Also, I ran this from a gnome-terminal under a normal graphical session.
The filesystem layout was:
Filesystem 1K-blocks Used Available Use% Mounted on
51606140 3111784 45872916 7% /
tmpfs 769704 548 769156 1% /dev/shm
/dev/sda1 495844 28538 441706 7% /boot
560152184 203192 531494900 1% /home
The home partition still contained /home/whiteele/.gvfs and the root lvm had var/lib/nfs/rpc_pipefs and empty boot, dev, home, proc, selinux, sys directories. But other than that everything else was eaten by the rmrf. Oh yes, and you have to supply the --no-preserve-root option to ensure the rm command that you know you are being silly.