I have the same issue.
Temps report correctly in the "temp sensor" screen and "fans" screen
But they report 0 when i try to access the scab data on the CFA-635 Screens.
I also have another issue, Fan 1 on my SCAB unit is not following the Auto Power-Curve graphs.
The graph is following the line properly, but the fan stays at the minimum speed / temperature allowed
(Running Windows Vista Ultimate SP1 with UAC disabled, C2D E8400, 4GB DDR2 Ram.)
--edit--
Actually, i can confirm that ALL fans on the SCAB module are only running at the minimum temperature (i think its related to the reporting 0 bug)