After upgrading DH67GD from bios rev. 105 to rev. 110 IDU is now showing a PCH temperature of 0°C.
This is with IDU 3.1.3.030 but going back to 3.1.2.022 gives the same result.
Before bios upgrade typical PCH temp.was 50°C. with both IDU releases.
DH67GD, core i5 2500, 8GB DDR3 PC10600 cas 9 1,5V, windows 7 64bit no RAID (AHCI only) PCH is H67 rev B2. disk drives on 6Gb/s ports.
All drivers (including management engine rev. 1065) are the latest, the issue was the same before and after upgrading video and audio drivers to the latest release.
This is just to inform some involved Intel people looking at this thread, if any, and also users who observe the same issue.
I know that it is a long and hard process to make a single IDU software follow all those platforms.
Probably nothing to do except waiting the next IDU rev.
Going to the bios menu I found that PCH temperature is also 0°C there.
Finaly the issue was solved in the bios setup, performing a load default bios setup which I had missed after upgrading the bios.
Sorry for the false alert, but maybe useful if you get the same.