acpi_bus_number: can't get _ADR

[huangxi]

Hi!
I get this message when I booted my FreeBSD 6.2-PRERELEASE:

acpi0: <A M I OEMRSDT> on motherboard
    ACPI-0438: *** Error: Looking up [OC06] in namespace, AE_NOT_FOUND
SearchNode 0xc21982a0 StartNode 0xc21982a0 ReturnNode 0
acpi_bus_number: can't get _ADR
acpi_bus_number: can't get _ADR
acpi_bus_number: can't get _ADR
acpi_bus_number: can't get _ADR
acpi_bus_number: can't get _ADR
acpi_bus_number: can't get _ADR
acpi0: Power Button (fixed)
acpi_bus_number: can't get _ADR
acpi_bus_number: can't get _ADR
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_throttle0: <ACPI CPU Throttling> on cpu0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> irq 16 at device 1.0 on pci0
pci3: <ACPI PCI bus> on pcib1
pci3: <display, VGA> at device 0.0 (no driver attached)
pci3: <display> at device 0.1 (no driver attached)
pcib2: <ACPI PCI-PCI bridge> irq 16 at device 28.0 on pci0
pci2: <ACPI PCI bus> on pcib2

Does anyone know what this means?
My motherboard is ASUS P5GPL-X.

Cheers,
XiXi