I recently have found a problem. I use my macbook to watch a lot of dvds. I have never had a problem until about a month ago. I went to put in an arrested development season disc and my dvd player wouldn't play it. It makes the sound as if its about to read it then sort of dies and tries again and repeats that until it spits the dvd out. The dvd is not scratched or anything. Its brand new actually. And just recently this happened again with the Dexter season. What's weird is sometimes it will play the discs and other days it wont. Its VERY frustrating. Any help? I am pretty mac illiterate.