FreeBSD shutting down unexpectedly

[Yuri Lukin]

>I believe the 1st temp is MB, the 2nd CPU1, the third CPU2.  One way to 
>figure out is to run something CPU intensive on only one CPU and watch 
>which temp rises.  A huge gzip would do the trick.  The MB temp 
>shouldn't change that much, but CPU should go up noticably.

Good call, I gzipped a 500MB file and watched the second temp value rise. 

>I believe the monitoring chips are completely independent of SMP.  The 
>monitoring chip has no clue whether the OS is using the CPU or not, it 
>just records its temp.

I agree with you on that. 

>PS I hope mbmon has those voltages all wrong, as 3.27 and 7.93 are 
>nowhere near 5v or 12v!  (There's also healthd in the ports, but my 
>(limited) experience is that it doesn't always get voltages right either).

>From what I remember, when I looked in the BIOS I realized most of 
what mbmon was reporting was slightly off. 

Thanks to all for the help. 
-Yuri