I have a Sony KF-42WE610 TV. Somehow, the picture has gotten zoomed in more than normal. It's especially noticeable when a channel has some text running across the bottom of the screen -- much of it is chopped off.
It's not an issue with the screen options. It occurs on Wide Zoom, Normal, Full and Zoom. I've also tried adjusting the vertical size while in Zoom, but with no luck.