Spiderplant: Ok i'll hope this will help you understand a bit more about our problem.
When watching QVC the signal outputed is pure 4:3.
On a 4:3 (old style) television the picture will fill the screen. No matter what the set top box is set to in settings (4:3, 4:3L or 16:9)
On a 16:9 (widescreen) television, it will not matter what the set top box is set to because the signal is pure 4:3. However what complicates matters in this regard is how you display a 4:3 picture in a 16:9 frame. The sensible option is to squash the picture into a 4:3 shape on the 16:9 frame. Done by the television this will put black bars either side of the picture to 'push it into the shape that most people know as a 4:3 picture.
What we are describing is a problem where the set top box is doing this 'pushing' before it hits the television. So the picture is 'pushed' even more when displayed on the 16:9 television.
Hope this might make things more clearing???
As for why does Skaven have his box set to 16:9 even though he has a 4:3 television. Well some 4:3 televisions can 'push' the picture down to 16:9 so we can get a higher resoloution picture then 4:3 letterbox but thats a whole new story