New MacBook spontaneously awakens

Question

I have a brand-new MacBook (black) that I'm setting up for a client. For some reason I haven't been able to figure out, it wakes itself up from sleep spontaneously. If the display is closed, it makes a noise (sounds like the optical drive, which is empty, cycling - normal when awaking from sleep), the display backlight flashes on briefly, then it goes back to sleep. With the display closed, it does this periodically, at apparently random intervals. If the display is open, it just wakes up and sits there, as it just did at 5:09 pm (what would it be checking at that time?). It's not connected to the Internet, or to any network. So far as I can tell, I've installed nothing that would cause it to do this. I tried switching to a new, unaltered account, but it still does the same. Does anyone have any idea why this MacBook awakens itself?

Answer 1

Well, I see there haven't been any responses, but I think I got it figured out, so for anyone who might be interested, here's the story:
First, I tried resetting the SMC, and it quit the random wake-ups. Great, I thought. Until the next morning, when it did it again. -Sigh-
But then I had an inspiration: I realized that I was using an Apple Remote with my MacBook Pro, stopping and starting an audio track while I transcribed the speech. So I experimented a little, and found the remote does awaken the MacBook when pointed at it. But it also awakens the MacBook when not pointed at it, as in pointed ca. 120 degrees away from it, toward my MBP, with the remote's rear end actually closer to the MB. So apparently the Apple Remote has a pretty wide field of fire (or maybe it also sends out of its rear end?). Anyway, since I stopped using the remote, the MB has stayed peacefully asleep. So I guess that was the problem, and the solution.