XEN3 handles xm shutdown?

Hello,

Just started testing Xen 3.0.2 before I upgrade from my
existing Xen
2.0.7. I have just compiled a NetBSD Dom-U kernel from
-current
sources (with today's date) and I have powerd running but
it looks
like the guest is not yet handling the xm shutdown from the
Dom-0.
Have I missed something or is this functionality not
available yet?

Regards

Chris