Temperature sensor is absurd

[Sean Bruno]

Using RELENG_6(updated) on a Shuttle xPC SD30G2, I am seeing the 
following error message repeating on the console:
    acpi_tz0: _TMP value is absurd, ignored (-73.0C)

The temperature reported by the BIOS is ~31C for the CPU and ~32C for 
the System.

I agree that -73C is "absurd" for sure.  The system has the latest 
BIOS(rev 7).   What should I look at to repair this condition?

I have dumped the ACPI tables
http://consultcsg.com/shuttle.asl
http://consultcsg.com/shuttle.dsdt


Sean