nf7-s bios 20 and MBM

After I flashed my bios from 19 to 20 I have noticed that my MBM does not always give the correct temperatures and that sometimes my chassis fan speed shows as 0. Does anyone have any ideas what could be causing that?

thanks

I'm running bios 20 & I've not had any problems with mbm. What version of mbm are you useing?

Im running 5.3.5