I have a 13" aluminium Macbook. I recently tried to watch Gomorrah, purchased as a new, original, DVD (highly recommended BTW). When inserted my drive makes a hellish mechanical noise, not scratching, but like it doesn't know where to read from. The DVD works fine on all the other machines I've tried including a newer Whitebook, a Dell desktop and a standard DVD player. My Macbook hates it though. Other CDs and DVDs work fine on my Macbook though. The warranty doesn't have too long left, is it worth getting checked out, or am I going to get turned away?