Yeah, I don't know what the deal is. BUT -
I have my box set to native, and the TV reports the incoming signal on a channel change, and this is 1080i. So I set to work -
HD channels you can't force the scaling mode but my TV can. I set my TV to zoom, same as crop and i got the full screen. And, it is HD, upscaled of course, but looks as good as any other HD channel.
Well, SG1 is presented in widescreen, on a 4X3 screen. I have the zoom option, so I can fill the 16X9 screen without cropping, but it still doesn't look any where as good as a true HD presentation. You aren't actually adding info to the picture when you zoom it, you are just separating the pixels a little more. But, it's still better than watching the reduced size.
Incidently, SCIFI now has the largest logo I have ever seen on the tv. It added GHOST BUSTERS, and it's time, on top of the logo, in large letters.