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wmprice1240

 
Member Since: May 02, 2009
Posts: 480
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Mac Specs: MBP 2.33 4GB: MacPro 8 Core 2.8, 16GB: MacMini 2.26 4GB: MacMin 2.53 4GB: iPhone3GS 32GB

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It sounds like what you are hearing is the gyro/motion sensor built into your Mac. This feature parks the hard drive in the case of sudden motion in your Mac to protect your data. It's normal and nothing to worry about.
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