When I view a SD program in a 1080i pillar box format, I get these flickering white dots in a line at the top of the screen. Has anyone else seen these? I have a 42" Vizio 1080p LCD HDTV with an HR20 using HDMI to connect them. Same thing happens using component video cables. The problem does NOT occur when I view a SD program in 720p format. This is preventing me from using native mode because the minor annoyance watching SD programs. I have to manually set any SD program I watch to 720p pillar box. Any suggestions on how to resolve this or is it something I have to live with?