I've just started improving things with a new TV and DVD player, but have a slight snag? I have a Samsung LE40M87BDX connected to a Denon DVD-1940 via a QED Qunex HDMI-P lead. On the DVD player you scroll through the HDMI settings 480/p/576p - 720p - 1080i - 1080p. The 480 and 720 are fine, but when i select either of the 1080's the screen starts juddering/shaking? This is on the intro screen, but also carries on doing it if you try and play a film. Denon have just said check my video settings, but whatever i seem to change it keeps doing it...any ideas would be greatly appreciated.