I had the same problem in my C43 AMG -- the dealer just took out the owner's manual (which I had in there) and the noise stopped. I guess that the manual pressing against the glove compartment door made it more suscepitible to a rattle.
This is, of course, a much lower impact solution than pulling out the glovebox.
'98 C43 AMG
'93 190E Limited Edition (including factory Sportline package)