There are issues with HD playback all over. The most common issue is high motion video. Folk expected better.
Try this. Try it on PS3 on the same scene.
Last night, we tried to watch a Blu-Ray DVD ("The Conspirator") on our new Samsung BD5100 Blu-Ray player. The video playblack of the trailers and special features was fine, but the playback of the movie itself was jerky and grainy. (There was no problem with the first Blu-Ray DVD we watched; this was only the second.) Is the source of this problem the player or the DVD? If the former, is it a decoding issue, and is there a firmware update that corrects it? If the latter, is this a common issue with Blu-Ray DVDs?