I have this problem when playing 3D Bluray movies with powerdvd.
For the record, I have an LG LW650 http://www.digitalversus.com/tv-television/lg-47lw650s-p10766/test.html
which uses passive 3d technology. It displays a crystal clear image when playing 3d movies, which are encoded SbS or TaB, with other media players. I even tried encoding some movies in checkerboard and they played crystal clear too. Virtually no crosstalk.
However, every 3D bluray disc I've tried playing with powerdvd11 has crosstalk. The picture seemed strange right away when I turned on 3D. I set powerdvd to output the picture in checkerboard, and set the 3D setting on my tv to checkerboard. Swap left/right picture doesn't solve the problem, neither does left/right position (similar to 3D depth, but not the same).
So after turning 3D on, I clicked an option in my tv's 3dmenu that only takes one picture (usually left) from the input picture and displays it like it's the only one. In a TaB encoded movie, that'll display the top picture across the whole screen, fullscreen, as if it's a normal non-3d movie.
So I did the same with a picture sent in checkerboard from powerdvd, tv 3d mode set to checkerboard and only took the left picture. This is what I saw

mind you, this should be one clear picture. see the crosstalk?
so next I set powerdvd to output the picture in red/cyan, turned any 3d options on my tv off and took a picture again

I only circled one of the problems, but you see that it isn't the whole wing that is present, but only the color of the wing. So that isn't one of the intended pictures, neither left or right. It's crosstalk.
What should I do here? Is there an option for powerdvd to output picture in TaB? Should I get another product that will fix this issue? I just have a lot of 3D movies at home and I can't watch any of them in 3D...
Thanks in advance for any help!