I've ripped many DVDs and this is the first DVD where i'm having problems. Handbrake scans the DVD ok, but then when it goes to rip, it only goes at about 3fps (i usually get 120fps), and i can hear the DVD constantly spinning up then slowing down again. The DVD finally finishes and is playable, but contains skips every few seconds. Is this due to some sort of copy protection? I exchanged the DVD thinking it was scratched, but the 2nd DVD i received did the same thing.