I just backed mine up today for the kids, both discs, they worked fine. I used DVD Decrypter in file mode, and Clone DVD2. Burned on a dvd+r at 61% compression (disc 1) and it looked great on my stand alone Hitachi DVD player.
I burned using ICOPYDVD2. The movie burns fine but it skips a chapter late in the movie. The weird thing is when you rewind,it will play that chapter. I couldn't burn this movie with entire disc option on. It stopped at 10% and froze up.