Not sure about the front hub. Thats a very odd loud noise.
But the coaster should always be taken apart and greased up real good, even when new. I did that with my Geisha lt, and its been fine. I also did it with the federal coster i got for my other bike, but i havent rode that one yet as i havent assembled the wheel yet. But regreasing the inside of the hubs usually fixes any noise problems for these types of hubs.