Constant faint ping pong noise coming from HD
I bought a new MBP a couple weeks ago and reported this problem to Applecare. Applecare told me to go all the way to the Apple Store after waiting for about an hour even with the Genius Bar reservation online. Opened up the another MBP out of the box, still has the same problem.
Is this sound affecting ALL new MBP's? I understand that this faint ping pong noise has been around on MBP's since 2007, and that Apple was made aware of it, but nothing seems to have been done. Why?
Macbook Pro 2.66 Ghz, Mac OS X (10.5.6)