Let me clarify. It's not the frame rate or animation "speed" that is the problem. The problem is like this: I made a posable cage prop that folds and unfolds. I put the models hand on the cage and every 10 frames unfold the cage a little and keep the models hand on it. It looked ok so I continued to do the rest of the animation (300 frames) When I went back to some of the frames I did in the beginning, they were messed up. The model was in the cage prop, the cage prop was twisted the wrong way, the model looked like a contortionist, etc.... It looks as though Poser changed some of my keyframes on it's own. I made the movie just to make sure and it IS changed.