I hear a slight creaking sound (a similar sound like that from an old creaking Dell laptop) from the driver's side dashboard (just behind the AC vent above the head light switches). I only hear it when I drive on rough streets or go over bumps. Any idea what might be causing it? Anybody experience it before?

I am taking my A3 in for its 25,000 mile service next week. I hope they will be able to diagnose the problem.