Ok thanks guys, i think i'll chill out about this issue now...
I guess 40-45c is only slightly warmer than a hard drive at load, so not that hot... I came from owning an iMac perviously and you should see the temps inside one of those things, everything is hot hot hot!
I guess these chips do have a lot of work to do and i do have a lot plugged into this board, in the pcie slots, usb ports, and in the Sata ports!
Cheers!