Strange noise- Fan?

Alright so, i've got a 3 week old macbook, got it on christmas. Recently, i've noticed a sort of...whirring? noise coming from it. I'm pretty sure it's the fan. I can't remember if it's done this from the start or not. I'm pretty sure it's nothng but me being paranoid. Weird thing is, if the MacBook is planted on a flat surace, or even my bed, applying pressure to the top left corer of the macbook stops it (around the magsafe connector area). When the fan speeds up, this seems to go away. It's not the typical "mooing" on and off problem, i'm sure of. its just a constant noise that seems like it should not be. Anyone else? Any ideas?
When the fan speeds up, It kind of sounds like a jet engine warming up for takeoff, the noise gets higher-pitched. Thank you in advance, desperatley hoping i dont have to take it in.
Message was edited by: thiswho

Hard to say without hearing it, but my fan cranks quite a bit sometimes, especially while streaming video on the net with Safari. Maybe other times too, but I haven't paid much attention. I have a Widget called iStat Pro which shows fan speed. Normal usage for me is around 1600-1800 but when it cranks up it can go as high as 6000 rpm and you can really hear it and feel the warm air from the vents near the hinge. The next time it happens, put your hand near the "MacBook" logo and see if you feel warm air moving. If so, it's the fan. It is fairly rare for me for it to go that high, and if I close Safari or just navigate to a non-video site, it slows back down pretty fast.
If it is constant and different from the fan, I don't know.

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First, go to System Preferences -> Energy Saver -> Processor Performance. See what its set to. If it is currently set to Highest, your fan could be going more often. Turn it down to Reduced or Automatic. Note if there is any difference.
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Strange noise- Fan?

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