My bet is the cable is using 1080i and some cable top boxes tend to show a little imperfection like that.
While it's far better than pre-HD days, I find today's folk to be more picky. Since no cable co is always on 1080p, you have choices to make.
As to the camera pan issue. When you see that, backup and examine the screen FRAME by FRAME. If each still frame looks OK then try turning off any video processing such as auto motion. If the frame is showing this, then it's burnt into the source and you won't be removing it.
Hope this helps,
so i've had my tv for 2 weeks now and i'm happy with it...but i've noticed an issue.
when viewing certain HD programs with certain backgrounds lines appear when the camera pans across the screen.
looks like its dimmer where the lines are.
i chatted with a samsung tech and he said to use hdmi 1.4 cables...i had 1.3...i have since switch to 1.4 but not seen any change.
so in low def everything looks fine. on my ps3 bluray...HD looks fine. but on cable tv certain scenes have lines appear.
also tried the test pattern under the help and that picture shows the faint lines.