New factoid about the infamous WHINE

I have had my MBP2.16 with stock 1GB for one week and have noticed the CPU whine. It's not too loud, worse when on battery, goes off with photobooth, and mirror widget.
What I recently noticed is that when I open quicktime, go to preferences, and click the RECORDING tab, the whine starts up again. I don't know enough about computers to know what this means. Thought I'd throw it out into the community to see if any true gurus have any insights.
Thnx.
New Mac Convert x 1 week. Yeah! (whine or no whine)
i kinda miss right click though :^(

Curious as it may seem, I can endorse this - opening the Recording preferences panel in Quicktime makes the (high-pitched) whine come back (on mains power, screen brightness on full FYI). Damned if I know what'd make something odd like that happen... I guess if it's polling the iSight or the microphone it might be something to do with them.
(Please don't flame if I just said something dumb and obvious - I barely have time to read these forums during the week...)

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