I just got my a new aluminum macbook for christmas and I cycled the battery for the first time yesterday. Once the battery fully drained my macbook went to sleep like normal but when I plugged it in to charge it did not start back up right away. Eventually I hit the power button thinking it was off but it came back on and displayed loading bars across the screen. I was testing to see if this would happen again today and it did. On my old ibook when it went to sleep it would wake back up as soon as it was plugged in to a power source. Is this something new on the aluminum macbooks? Please let me know if this is common or if anyone else is experiencing this. Thanks!