Hi, I just got my new 17", i7 MacBook Pro and I noticed that when the laptop is turned on and I move the laptop (for example pick it up quickly), the hard drive clicks quite loudly. This is the same case on my girlfriend's previous gen. 15" MacBook Pro. Is this normal? It sounds very worrying for some reason, as my non-unibody 15" MacBook Pro from 2006 did not do this. I thought it could be the accelerometer detecting a "fall" and parking the HDDs head, but the 2006 MacBook Pros also had accelerometers, no? The hard drive in my MacBook Pro is a Hitachi 500GB Model: HTS545050B9SA02 see you, chris.