Hello, I have a Samsung LCD flatscreen that I purchased 3 months ago. I forget the model number offhand. (It is the one with the glossy black trim on the outside and the v-shaped silver bottom). I have it hooked up via component cables to my HD cablebox and ahve noticed the following: During very dark screens on my Cablevision HDTV programming, large reddish-black lines seem to scroll up the screen to the top. I don't notice it as much on DVDs... Any thoughts on how to fix this?