Anyone else? When i use just my Plasma speakers - TV, DVD and Video are fine. When i use for surround sound through my Receiver i have to cancel plasma speakers because of echo. Then there is a slight lip sync problem whilst watching anything through my hi-fi. I have a Samsung 37" and a NAD T753 av receiver. I have been given 2 different reasons by different persons at Samsung One is there's a compatibility issue with my Nad - Rubbish, i also have a Pioneer amp and it does the same on that. The other is because Plasmas are new this problem has been recognised and we are doing a new generation of Plasmas and Home cinema to overcome this problem. Well that's great news after spending two grand and mouths move b4 words. ANYONE HELP??