Has anyone else noticed a high pitched piercing noise coming from their Sky+ digibox. I had my first one replaced and now the replacement is just as noisy. I assume it's coming from the hard disk or fan (if there is one). There was a slight noise from the second box which was just acceptable but now I have to turn the volume up to drown it out. Both sets were Pace models. Aside from the noise it's a wonderful piece of kit.