Hello, Last night for the first time I noticed that my new ATV2 (bought last week) exhibited a tiny audible 'blip' or stutter during music playback. I immediately checked the source files on my iMac and the 'blip' is not present. The ATV2 is streaming from my iMac which has a USB 2 external hard disc connected that contains the iTunes library. The pathway is like this; Imac (Itunes on external Drive) - wireless is disabled. Ethernet to router. Ethernet to Cisco Switch. Cisco Switch to W.A.P. (Wireless Access point) A.T.V. - wireless connection to W.A.P. A.T.V. optical out to Cambridge audio D.A.C. Cambridge D.A.C to Amp. I have had the new ATV for 5 days and until last night it had been faultless. Any ideas?