Home theater is complete, 1 quick question.

[Satsujin]

Hey guys,
I've completed my home theater last week and I'm loving it. I want to thank all of those who lent their valuable input on the components that I've chosen and will eventually purchase in the near future.
I will post pictures very soon of the complete set up.

I have one question regarding possible settings. Me, my girlfriend and some friends were watching the 300 BD. My player is the PS3 and my TV is the Samsung lnt 4071. And for a scene or two we definitely noticed some real grainy noise in some areas of the picture. Almost like TV snow. No big deal because it didn't happen often, but when it was noticable it definitely distracted us from the movie briefly. I have not changed really any of the factory settings on either TV or PS3. Has anybody else experienced this? And if so what did you tweak to remedy it. Those who have any insight feel free to lend your knowledge.

Thanks again.