I've received 2 box sets so far and both of them have been defective. The 3rd disc causes the DVD player to shake and make a loud rumbling sound. The soundtrack of the DVD has a wobbly sound to match. I have not been able to find others online with the same complaint but a friend of mine had the same experience. Both of mine came from Amazon and his both came from Best Buy in Chicago. I am going to return both of them and wait until I'm sure I can get a non-defective copy.