The trackpad on my MBP started to crack under normal use (I never dropped anything on it or dropped the MBP itself). I had this MBP for less than a year, so it's still under warranty. Should I bring it in to get it fixed? Because I hear that sometimes people's MacBooks come back with even more scratches and whatnot after they brought it in for repair. The crack is purely aesthetic --- the crack is underneath the glass, and the trackpad works fine. Any input would be appreciated.