"shutdown -p" does not power off

[Dsewnr Lu]

Hi all:

My problem is that I type "shutdown -p now" command, and system hang after
uptime show on screen.
I must press reset or press power sw 4 sec to poweroff. But "reboot" command
works fine for me.
I found it caused when hald_enable set to "YES" in rc.conf, if hald_enable
set to "NO" everything works fine.
hald is required for my desktop environment.

Any suggestions ?

My kernel version is FreeBSD 7.1-RELEASE #5 amd64.

Thanks,

Dsewnr Lu