I've just unpacked my new plasma display (samsung PS3 w/ built in tuner). The problem I noticed is that there seems to be a slight time delay between the sound & picture. Meaning I hear the speaking from a person just before the lips move. Not very funny to watch a long film.... When contacting the dealer he didn't think this could be possible and wasn't keen on helping me. Very nice person! Well, have any heard about this issue before/suggestions? Please advise.