What the hey?

I exchanged the LOTR:FOTR extended DVD for another at the same store . . . and this one froze up, too, at the very same scene, the Mirror of Galadriel.

Is the store's entire shipment defective, each one at the same place? Or is my drive going out? But if it's the drive, why does it play the rest of the movie fine, and then choke at that same point in the movie???

Aargh!