It's funny this topic has come up because I just recently bought a Redline 925 (less than two months ago) and I have also noticed a noise coming from my drive train. It is also a very faint noise and not one that I notice all of the time, but it seems that my noise is coming from the bb. It sounds as if it was not greased up enough and I can hear the bearings spinning. I have upgraded both the crank and chain since I've bought the bike and it is still making the same noise. My bike is due in for its free two month tune-up so I'm planning on having the bike shop take a look. The noise is enough to drive me nuts though. All I want is the noise of the wind in my ears, not my bike making noise.