I have a Westinghouse 1080p LCDtv and for over a year, it gave me no problems. Then a faint vertical line started showing up. It runs from top to bottom in the middle of the screen, and only appears when there are even or mid-tones behind it. Against most colors, particularly bright or dark ones, it's invisible. Anyone know what this is? I've been talking to the Westinghouse people and they're clueless, which has to be BS because I've seen the same problem discussed online by several other Westinghouse owners. If it comes down to it, I have a Best Buy 4-year warranty, but I wanted to see if anyone here knows what's causing this and if there's a way to fix it (other than not buying Westinghouse in the future). See attached image for an example. Thanks.