I just wanted to share this with everybody. I was starting to have some doubts about my JVC GR DVF21 Mini DV Camcorder. I would record things and when I would be moving recordings back and forth from my computer it would pixelate and get little black squares on the video that was permanete from then on.It was brand new Mini DV's and it was happening on three different ones. As I was watching this happen one day I notices the microwave oven that was 20 feet away was on defrost and when it would cycle my camera would mess up. So if your camera acts odd look around to see if there is a microwave oven close by. By the way I recorded over that mess and it was fine.