Does anybody know if this is a problem? I have 411S@811S as does my friend. He copied some movies that I then copied from him (both using dvdshrink and nero). Whenever I burn a movie that I shrunk from the original I very few many problems (occasional pixellation). When I burn a movie copied from his copy, I get lots of problems (30 or so pixellations per movie as well as occasional freezes). I can play his copies fine, but not my copies of his copy.
My theory is that when he copies an original, it introduces a certain amount of mostly unseen errors (as seen in Kprobe PI/PIF counts). However, by ripping from that 2nd generation copy, and then burning from that rip, am I introducing even more PI/PIF errors resulting in poor/unwatchable burns?