I have a 36" Sony Wega XBR250 which I use with a Panasonic A310 DVD player. Whenever I watch a movie on DVD and there is a small light, such as a candle, light bulb, star, LED, etc. in the scene, I get this darker streak coming from the light source and stretching across the screen. Usually these dark lines stretch to the right. It's like drawing a straight line from the light source to the other side of the screen. It reminds me a little of the ghosting effect from a bad antenna, but only happens with bright lights and is much more defined.
My television is properly calibrated, and the problem is bad with S-video, but much worse with composite video (almost unwatchable).
Does anyone know what is causing this? is it a problem with the TV, or is it the DVD player?