Toy Story 2 is the only movie I remember remember exactly where a white flash was at, though there were several during my testing scenes in this movie. The issue was present on Episode 3 and U-571 as well. I know I use chapter 15 on U-571 and the opening sequence on Episode 3, but I don't remember exactly where the flashes occured.

It occured on Toy Story 2. A white flash happened right after Buzz Lightyear runs from the spikes and picks himself up on the platform before jumping on the suspended discs. This scene is the opening sequence for the movie.

The flashes were also only when using a component input. After doing a reset on the 970 last night the S-video looked better than it did originally, but the blacks were still pretty poor. I have given my info to Scott and he has been very helpful.