Well, still having the same problems. I have noticed another bizarre thing. When I render a video in quicktime the file size is huge. A 20 sec clip will be like 1 gig. A 42 sec file rendered as a windows media file is like 14.5 mb. This might be my problem. How do I compress them down without losing quality. I should be able to render in the highest setting without having such huge file sizes correct?