I assume your TV is a LCD one? I have read and heard of blurriness issues with motion and sports on LCDs. I believe that the 120Hz implementation sort of helps but it is still a headache. I am sure that as the technology advances, it will become a non-issue. Hopefully your TV is not defective. I would also advise you to go to a local store that carries that TV and ask them to play one of your Bluray discs and see if the effect is reproduced and solicit their feedback.
Good luck,
Erle
Good luck,
Erle