ch0mb0: check your chainring bolts. I have broken several and thiat resulted in the same type of sound.

I've had many problems with the back end of my fuji. I broke spokes at least 4 times until the rim was totally trashed. People at LBS said that the spoke holes in the hub were too large for the spokes which created stress in bad places. Only broke spokes on the back though. someone else said that the front hub was actually fairly nice, much better than the sovos crap in the back. I wouldn't reccommend using the stock cog or lockring on another wheel seeing as they are stamped crap and prone to strip even the nicest hub.

I got a new back wheel and the bike rides great. no other problems besides needing to get all new chainring bolts.

tim