I've the same issue with 2 different plasma screen by panasonic with a mac mini bought in september 2010. The tv is connected with hdmi cable, with the presence of white objects on the screen there's like an halo following it across the width. Let me explain better, take "the hangover" (1 or 2 it's the same) ending credits with the static pictures on the left and the credits rolling on the right. When I watch this I see these light shadows over the pictures showed on the left that move alongs the credits on the right. Any solution? Or it's just a common plasma issue?