I recently tried to make a backup copy of the DVD "Lost in Translation". I firstly used DVDX Copy Platinum to rip the files to my HDD and I then burned the DVD using Nero 6. The DVD burned okay, but when it played on both my set top player and Power DVD on the PC, the content stuttered and the audio broke up. I tried the process again using Apollo DVD Copy 3.0, same thing happened. I burned some other DVD's before I tried and they all worked fine. Is this a form of Copy Protection? Can anyone help me please?