I've got a 2 month old Cannondale Evo Supersix. When I take it over a rough patch of road (far too many of these in Wiltshire!) there is a loud noise coming from the forks - it's obviously caused by the vibrations, but it sounds really unhealthy!
Edit: The noise is like a loud.. chattering I guess. Not chattering in the braking sense though - it happens no matter what braking activity is going on. It's a bit hollow sounding.
What might be causing this? And is there any way of preventing it?