i don't know your definition of download, but you will need good quality, a torrent file probably won't work. I'd rent it.
Anyway, I wish I could be more precise but it seems to happen with the first 30 minutes of the movie, like when our Herione walks through a door you/or at least me could see a very faint shift. (and this has been the only movie or program, so far, which is outstanding because i've watched my set a lot.)
On another note, I am very picky and sold a S2 because of floating blacks and in comparsion since Panny released the patch the FBr are next to non-existant. If it were me I'd be more concerned about the Green blob/pink tint issues especially if you're still within the return period.
Ps i'll be honest mine was so faint it's not worth looking for...