Help appreciated. Have had a t2 for the last couple of month's and have had some missed recordings and some epg issues bit nothing to worry about. Problem I have now is playback when I am recording another channel 2 channels. My playback of a recorded source can freeze and I have to forward to get it moving again. The hdd is formatted within the receiver and I am using latest VIX image. The hdd is 5400 rpm. Would I benefit using a 7200 drive or should the 5400 be sufficient. Thanks.