ive just bought a freecom external dvd,using nero 6 to burn dvds.ive downloaded a movie[mpeg] and when burned it freezes about an hour into the movie...but audio continues for the rest of the film [about 30 min.]this has happened twice.ive burned another film and it was succesful.im very new to this so "user friendly" advice please.can i adjust anything in nero.ive got it on max speed-is this correct,or is lower better.any help/ideas/suggestions please..thanks.so to sum it up---movie plays,freezes,then audio continues!