Okay, I didn't understand what you were saying before Chainsaw. You're right about the other DVDs too, the other anamorphic DVDs I've ripped have been 2.35:1 not 1.78:1, and when I ripped them there was no stretching.
Now that I know why it happened, can you tell me an easy way of fixing it? Or is just oneof those things I need to mess with in my editing program?