I said already that I will not cover this issue anymore, unless there is an official word from Nikon. The official word came yesterday from Nikon Europe:
"The 70-200mm f/2.8G ED AF-S VRII lens features a component in the lens design which may appear to have surface pits or a rough texture when viewed through the front lens element. This rough surface appears in a very small confined area within the lens barrel and is caused by air holes remaining in the metal portion of the lens during component construction. Due to the magnifying effect of the front element this rough surface will appear greatly enlarged when viewed through the front of the lens.
This components function is to reduce and remove internal reflections from the lens and due to this the texture of the surface will have no effect on the lenses performance or operation. Nikon would like to assure customers that the lenses optical performance remains unchanged and that this component will not release any dust or particles into the lens itself."
Everyone can relax now! If you have returned your lens, you can buy it back directly from Amazon for 2368,98, free shipping.