JUst got htis set and am might impressed generally. However, I have noticed a slight flicker at the top of the picture. It happens when the top of the screen is dark or black and looks like the top line of pixels is flashing white occcasionally. It's barely noticable really but has started to bug me. I put it down to bad Freeview reception at first but have noticed it on DVD's too. Apologies if this is a known issue that has been discussed. I searched but couldn't find any similar threads. Anyone else noticed this or is my set dodgy? I also get the odd green flash on the screen which I think may well be DTV interference and it happens so rarely it doesn't bother me.