Thanks for the reply.
I have a 1.66 Dual Core Mac mini, 1GB RAM, 100GB drive.
Here is one a lot of people most likely have:
King Kong (part where the camera pans through ancient city where they first encounter cannibals).
It actually happens on all DVD images I have. Pick a movie on your collection and look for scenes where camera pans from left to right, from right to left, from up to down, and down and up. Are yours smooth?
I noted that I get this not just on Mac mini, but my 2Ghz MBP, 1.5GB RAM, 80GB drive.
The iTunes videos I get choppy pans are:
Dora the Explorer, the opening sequence when camera zooms all over the room towards green computer monitor. My son noticed it too!
Little Einsteins opening sequence when they fly their big rocket ship and camera pans from left to right.
Battlestar Galactica Episodes - Again, when camera pans in different directions.
At first I thought maybe it has to do with the fact that I am using iso (UDF) images as opposed to VIDEO_TS folders, but it also happens on those h264 movies that I bought from iTunes store.
As I mentioned, if I quit DVD Assist by modifying the script right after quitting Front Row and before DVD Player starts, I get smooth pans again! No issues at all. Very strange.
I guess I can live with it by doing this on archived DVD's, but I don't know how to fix it on those h264 movies from iTunes. Maybe it's related to that pause issue on previews that was going on before? Not sure?