Hey guys, I just got my replacement unibody MBP two days ago...the first one had issues with the screen flickering after it came out of sleep. This isn't an issue (I don't think), but I was just checking to make sure: Sometimes when I pick up or tilt my mbp there is a noise coming from the right side. I think it's the hard drive or a fan, but it sounds like it's hitting something or something...just a sort of clicking sound. It doesn't do it all the time, and it never does it when it's sitting on my desk , but sometimes when I move it does. Is this normal (this is my first Mac!)?