To date (02/15/2013) I am personally aware of 76 individual cases of fuel leaks on the E55 platform with reports filed with NHTSA. (See NHTSA # PE12001 for details). The 2008 recall campaign was a half-hearted attempt to bandaid a serious fuel leak problem and it remains a serious and persistent issue to this day. I am also aware that numerous E-class owners (non AMG) have had similar fuel leak issues, and have also filed with NHTSA for resolution.
Overall I do LOVE this car, but MBUSA is really tarnishing their image with their legal maneuverings and refusal to take direct action on something as serious as a fuel leak issue.