I am just about to buy a Plasma but am worried about screen burn. If I am honest, the kids watch T.V. for hours on end at the weekend and all of the material is from sky and has logo's in the corner ( MTV, Nickelodeon, Trouble and all the other usual suspects). I have to decide on the schedule for the three of them so as you can imagine it will be on for a very long time, continuously. I am looking at the panny pwd6, would this be a majoe problem?