The issue is not with carbon. It is with the BB30/PF30/.... non threaded bottom brackets. One of my co-workers at work had to get a Jamis Xenith warranteed because of the exact some problem as this OP. Frame wore off around the bottom bracket. [MENTION=88222]Campag4life[/MENTION] is right, there is a proper way to install these BBs but for some reason I see a lot of creaking, failing BBs around where I live.