I think you probably got confused with the new Freeview PVR's from Humax. There's a noise problem from the fans which seems to be what you've reported. WHF have convered it here:
http://whathifi.com/News/Humax-fixes-fan-noise-on-its-PVRs/
To my knowledge, no-one other than beta testers have the Freesat PVR yet for review.