My new macbook makes a fast clicking sound when running. It's not that loud, but is it normal. I don't recall it doing it when I first got it.
Is the sound consistent? Can you reproduce the sound? Is it the HDD making the noise? If you answered yes, to the first 2 of the questions, please start making an appointment with your local Genius Bar or call Apple Care.
If you answered no to the first 2 questions and yes to the third, then its just your normal HDD finding stuff. If the noise is really loud for HDD noise you might want to consider calling Apple or paying the Genius bar a visit also.
Noises are not normal in new MacBooks (noises besides the fans, and if you can even hear the fans that is)
To hijack the thread a bit but it might be relative, I got sounds just as he describes. And they come from the HDD, I can hear them from a good 3 meters away, only thing that makes a sound in my computer. Never heard the HDD this much even in my old MacBook while moving 20 GB of data onto it. And now it's just ideling.
It makes the noise all the time. It's not that bad, but it's noticeable when typing in my lap.
I don't think it's the hard drive. Sounds like its coming from right above it though.