Replace my Macbook Air with a new one should they refresh them in September. I am covered under the one-year warranty. Do you think if problems persist (core shutdown, etc) that they would perhaps grant me a trade in? I ask this because I was under warranty for my ipod mini when it died on me and at the time I needed a replacement the ipod mini was replaced with the nano so they offered a nano to me instead. What's everyone's take on this?