Hi everyone, I'm already on my 2nd MBP. Picked up last Wednesday and swapped it for another model 2 days later after experiencing crashing while my laptop backs up via Time Machine to an external HD. Computer freezes up during data transfer and refuses to acknowledge my inputs. Then crashes and restarts itself. This is now my 2nd laptop and I'm experiencing the exact same issue. Weird thing is, I was able to do my initial Time Machine backup with no problems. Anyone else experiencing this?