Originally Posted by ZippyThePinhead

Dunno what sort of noise you were experiencing, but I was getting a creaking sound from my FSA BB, and my bike only has 600 miles on it.

My mechanic friend took off the left crank and found the splines on the spindle were completely dry. Water had worked its way in, and there was a bit of mineral residue/corrosion on the splines. He greased the spindle, reassembled the crank, and the noise is gone.