There are some order of operations issues here, particularly with the
"shutdown" example (and with power management); it may be better to have
finer grain events (e.g. shutdown is something you ask the kernel to do,
and it generates events like: flush bio cache, unmount filesystems, flush
HDA caches, spin down disks, trigger power-off/reboot/halt/whatever).

	Erik <fair@clock.org>