shutdown -p now and 5.0-RELEASE

[Kjell Midtseter]

After I moved from 4.8 to 5.0 (installed from scratch, 
not upgraded) 'shutdown -p now' will not work.

After issuing 'shutdown -p now' I get the following messages:
Power system off using ACPI...
ACPI power-off failed - timeout
Hit any button to restart

My kernel config file contains:
# Power management support (see NOTES for more options)
device          apm
(In 4.8 I used to have:	device apm0)

My rc.conf contains:
apm_enable="YES"

>From dmesg.boot:
FreeBSD 5.0-RELEASE-p7 #0: Thu May 29 20:30:44 CEST 2003
CPU: VIA C3 Samuel 2 (799.74-MHz 686-class CPU)
  Origin = "CentaurHauls"  Id = 0x678  Stepping = 8
  Features=0x803035<FPU,DE,TSC,MSR,MTRR,PGE,MMX>
......
acpi0: <AOPEN  AWRDACPI> on motherboard
    ACPI-0625: *** Info: GPE Block0 defined as GPE0 to GPE15
Using $PIR table, 6 entries at 0xc00fdf10
acpi0: power button is handled as a fixed feature programming model.
Timecounter "ACPI-fast"  frequency 3579545 Hz
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x4008-0x400b on acpi0
acpi_cpu0: <CPU> on acpi0
acpi_button0: <Power Button> on acpi0
acpi_button1: <Sleep Button> on acpi0
......
acpi_cpu: CPU throttling enabled, 2 steps from 100% to 50.0%
============

Help appreciated, Kjell