Hello, I've been having so many defective Macbook Retina from this one retail store. I'm planning on visiting a different retail store to get my exchange this time. However, do they know how many times I've exchanged my macbooks? It didn't say anything on the receipt I got by the way. I've been doing 3 exchanges so far from that retail store, and I hate having this extremely awkward moment when I'm doing the exchange where I start feeling so bad as if I'm doing something terribly wrong. Anyways, this time, I'm having an issue with the shut down - it takes 10 ****ing seconds to shut down this 13" 512gb ssd machine, which is clearly not normal. Any response/tips/advise would be appreciated..