[ale] errors when halting debian

[merlintm at atlnet.com (Tri)]

I'm using debian 2.0. When I issue the halt command or the reboot
cammand sometimes before it finishes teh shutdown sequence I see
something that says the umount is busy when it's trying to umount the
remote filesystems. I'm not running any applications at the time. Any
ideas. This happens randomly.
Tri