MBP little noise

[hyuratzu]

Hi guys, I'm a new mac user, on monday I bought a 13" 2.4 ghz MBP.
I know I can sound a "bit" paranoid, but sometimes, when I use it, I can hear a little, but very little "crr" sound that last half a second coming from the upper right corner of the MBP.
Do you know if it's normal (or common) or should I worry about it? I think it's just the fan changing speed, but I'm not sure.
Thanks a lot

 

[SnowLeopard2008]

Don't worry about it. Sudden movements make the HD drive head park itself to prevent damage. It happens on mine too.

 

[FangBianMian]

The 'crr' is fine. It's the 'blitick-blitick-blitick' you need to worry about.