No HD!

I was doing a quick calibration of a TV today and I noticed the picture from the Dish Network receiver looked a little soft.  I checked the cable and the installer had used HDMI so that was good.  I brought up the video settings menu on the satellite receiver and it was set to output 480p!  I switched this to 1080i and the picture sharpened right up.  I see this all the time.  I wonder how many HD cable and satellite boxes are installed with HDTVs and aren’t set to output HD video?  I had one customer that had been paying for HD for over a year and had never seen real HD before.  They were amazed when I changed the setting to output 1080i.