Calling all Viera owners: I have had my Viera for a two months now. I am growing irritated by colour banding. By this I mean that there is a green tint across the screen. It is most obvious in pictures that have subdued lighting and flesh tones. Is this something that all plasmas are prone to? Or is it something particular to Vieras, or 50inch models, or just mine??? I seem to notice it most on DVD (Pioneer 545)(AV4).