I've been using DVD Shrink for a long time, have the newest version. Lately any disc I watch that I've burned works fine until you get later on in the movie, or further on in the episodes on the disc. Once you get to that point the disc starts messing up. This happens on everything I've been burning. What's the problem? Do I need to reinstall shrink? Or is it my burner? I've had the lens cleaned... Please let me know any ideas you may have.