Dell Inspiron 1100 won't shut off

[freon]

Hi. I just installed Linux Fedora 8 on a Dell Inspiron 1100. I'm wondering how to shut down the system. If I do

shutdown -P 0

it tells me it's switching to single user mode but it does not power down. Is this normal or is there a way to make Linux power the system down?

[PhillyFloyd]

shutdown -h 0
is the most commonly used... or if running an X session in Gnome go to: SYSTEM-->SHUT DOWN...