I was using DVD Shrink to copy one of my movies in a Sony DRU-700A; I hit a spot where I got a read error, and the program said it couldn't continue; I tried it in my wife's PC, which has a NEC ND-2500, and Shrink read right through the whole DVD and made a perfect copy. I tried cleaning the Sony unit, but that made no diff. I could see obvious 'spots' on the original DVD that I knew were causing the problem, but I'm still at a loss to understand how her NEC burner read the DVD when my Sony could'nt. Same versions of Shrink. This is beyond me. Anyone had similar experiences ?