Fading in and out?

[s72450]

I picked up my first BR player on Friday and hooked it up to my new Vizio 42' LCD. I bought the Sony BDP 5360 and I am using an HDMI cable for connection. I watched a few Blus and everything looked fine and on the third Blu I watched, I started to notice how the screen seems to fade from a darker picture to a lighter picture, at first it didn't do it that often and in darker scenes it does it quiet frequently and at some points during the movie it almost fades to complete black.

I switched over to regular television and it does not do this while watching cable, only when I am watching Blus.

Have I done something wrong? Did I hook it up wrong or is this faulty? I'm really nervous that I've messed something up. Please help! Thanks!