I recently got a Panny TH-42PW4 plasma, and am very, very happy with it. I also got the matching speakers and stand with the unit. I have noticed though, that there is a faint buzzing coming from the back of the panel. It's definately not the speakers, I have checked. It seems to be eminating from the opposite side to the power connector, but it does sound to me like a 'power' type noise. It also seems to get fainter after the plasma has been on for a while, but it is still noticable, especially on quieter scenes. Anyone else experiencing this? It doesn't seem to effect the operation of the screen at all, and it's been very reliable, but you know what these things are like, it's annoying for us perfectionists!