NAS not shutting down

It looks like the system is going down for "halt", which does not always mean it's going down for poweroff. This could be a BIOS/ACPI thing, but it could also simply be the fact that the device has shut of and is waiting for the power to cut out (remember the old days when after shutdown the system used to show you a message saying "It is now safe to power down the system" or something similar? That's what I'm thinking is going on.)

2 possible workarounds;

• If you have access to a root shell, enter the command shutdown -hP now and see if it actually shuts of this time.
• Force ACPI; I don't know much about NAS equipment, but I'm figuring it'd have some kind of boot loader (maybe even just GRUB). Add this as a kernel option; acpi=force, reboot the device (does running reboot from a root shell reboot it or does it still just hang after shutdown?), and try the shutdown -hP now command.

Edit: Oh, wow. I seem to be quite late, don't I? :p