I have one of the original Sky+ Pace boxes, now around 2 and a half years old. It has a very annoying buzzing sound, even when turned off. The only way of getting rid of it is to unplug the mains lead. I suspect it's been there from the start but is getting worse. I may be more fussy now that I've got a full home cinema kit. Had a quick look on here but didn't find anything directly related, although there was a reference to the hard drives of the early decoders being noisy. It doesn't sound like a fan, although I do have a video recorder sitting on top of the box. How crucial is ventilation for Sky +? Any comments gratefully received.