freebsd stable - Oct 2012 - ACPI Error: No handler for Region [POWS] (0xffffff000994f380) [IPMI] on Cisco UCS C200 M2

Hi,

I am getting the following error on server Cisco UCS C200 M2 running 
FreeBSD 8.3 amd64


Oct 31 02:15:22 ucs200 kernel: ACPI Error: No handler for Region [POWS] 
(0xffffff000994f380) [IPMI] (20101013/evregion-487)
Oct 31 02:15:22 ucs200 kernel: ACPI Error: Region IPMI(0x7) has no 
handler (20101013/exfldio-382)
Oct 31 02:15:22 ucs200 kernel: ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPC0.P111._PSR] (Node 0xffffff0009934080), AE_NOT_EXIST 
(20101013/psparse-633)
Oct 31 02:15:23 ucs200 kernel: ACPI Error: No handler for Region [POWS] 
(0xffffff000994f380) [IPMI] (20101013/evregion-487)
Oct 31 02:15:23 ucs200 kernel: ACPI Error: Region IPMI(0x7) has no 
handler (20101013/exfldio-382)
Oct 31 02:15:23 ucs200 kernel: ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPC0.P111._PSR] (Node 0xffffff0009934080), AE_NOT_EXIST 
(20101013/psparse-633)
Oct 31 02:15:23 ucs200 kernel: ACPI Error: No handler for Region [POWS] 
(0xffffff000994f380) [IPMI] (20101013/evregion-487)
Oct 31 02:15:23 ucs200 kernel: ACPI Error: Region IPMI(0x7) has no 
handler (20101013/exfldio-382)
Oct 31 02:15:23 ucs200 kernel: ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPC0.P111._PSR] (Node 0xffffff0009934080), AE_NOT_EXIST 
(20101013/psparse-633)


# uname -srmi
FreeBSD 8.3-RELEASE amd64 GENERIC

I don't know what it means. Should I be worried about it or should I 
ignore it?
Is there something that I can tune to turn this message off or is there 
something which need to be fixed on FreeBSD side?

We are planing to push this machine in to a production in one or two 
weeks, but until this time I can test patches etc.

Miroslav Lachman