DVD Decryption problem

Hey to all, I have been the new version of Nero 7 Ultra. In the past I successfully burned/copied about 3 dvds. Well all of the sudden I can't. I am trying to encode PoTC at worlds end. It a lengthy movie. I have decrypted with DVD decrypter and now am using DVDFab Decrypter. Which is taking extremely long. Long enough I could go for a 30 mile walk and it still would be only about maybe 10% done. My pc is old but it isn't that slow. So anyone have any ideas as to what the cause is?? I'll take suggestions. Thanks

 

This movie IS NOT out on DVD as yet so I assume you are pirating it from the net, such being the case you will not receive any assistance from this forum.