'Flickering' on BD playback?

[Proteus]

I've had a new issue pop up recently on my PS3 while watching BD's.

It seems an odd 'flickering' happens throughout some BD's.

I checked the usuals... Cables, etc. Then I started getting more detailed.

Turns out the 'flickering' happens at the exact same spot on the BD's each time.

I've only noticed it happening a couple times during Happy Feet; however, tonight watching a new copy of Flight of the Phoenix it was completely off the hook throughout the movie, particularly in the last scene in track 34.

The BD's have no signs of any damage at all and are pristine (Flight of Phoenix being brand new out of the package). Yet, all I can think is that these must be bad BD's, though through all my research this seems to be a _very_ low probability and even lower since two BD's now have shown the issue and one of them, Happy Feet, did not have the issue during first viewing prior to latest firmware from Sony.

Finally, I have played several other BD's without flickering. Enter the Dragon and Night at the Museum being among the most recent. This leads me to believe it's not simply a 'dirty eye' at this point (plus, the non-randomness of events when it occurs).

The signal is running into a Sony Amp via component and into a Panasonic 50" plasma (1080i source from PS3). The PS3 runs cool and has never had heat issues. When the 'flickering' occurs there is no picture freezing or loss of audio... it seriously looks like it is simply a 'short in the line'. I'm at a loss.

What am I missing here?

Any help is greatly appreciated.

(First time post, long time reader, can't keep up with all the forums I'm on so never got around to registering until now)