New MBP 17 C2D - Machine loses power in sleep mode

Just got my machine so not a lot of usage, but I noticed it ran out of power yesterday. Charged overnight - it was in full charge at noon. Unplugged and used for a few minutes - put to sleep for an hour. Came back and it was at 92%. Used (lightly) for about an hour and battery went to 60%. Put machine to sleep, packed in suitcase and drove for 2.5 hours. Awoke machine and power down to 20%. Clearly either (1) it loses power in sleep or (2) it is waking up on its own and losing power. Only other thing I noticed is that I left parallels running internet explorer when machine put to sleep, and it had shut down (no message but app closed) when machine awoke.
thoughts

Try cycling the battery a couple of times by normal usage and see what happens. I remember this happening to me once as well when I first got my replacement MBP battery (due to the massive recall of Sony batts). After cycling the battery a couple of times by normal usage, it held its charge quite well I must say.

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