Mbm5 does the same with my p4s333. There is only one sensor listed for both the temps and the voltages. So conifuring mbm5 is impossible. I think the problem might be because of the combo of the two chipsets> quote from asus site
"SiS MuTIOL technology, the new bus architecture, connects SiS 645 and SiS 961 together, and delivers 533MB/s bandwidth between North Bridge and South Bridge and even up to 1.2GB/s for South Bridge internal bus frequency."
I really would like to monitor the temps. But I know it is not overheating. I do have suspision that it might be clock throttling when my ambient temps are higher during the daytime. Seti times just fall like a rock from like 2.75-3.5hrs at night to 4-6hrs to crunch a wu during the warmest part of the day. I have the cure with a water cooled setup, but I have to do some engieneering work to do before I mount the waterblock. Soon though
