I just bought a Sony 30" widescreen Wega TV, and when I got it home I noticed two horizontal lines, one toward the top and one toward the bottom, runnuning the entire width of the screen. They are extremely thin, and no picture comes through them. I was in a showroom last night and noticed that all the other flat screens had them, too. But when I got home, I noticed another one on mine, near the center of the screen. Not sure if they are scan lines or what, or if it's normal or I need to exchange the TV. I haven't called Sony yet. Does anyone know what these are? Thanks.