just thought id share my recent experiences with Trek with everyone in case you were thinking about purchasing one of their carbon frames. It seems that even if you have been a trek dealer for 6 years, and buy their top end bike (5900), which supposedly has a lifetime warranty, and never crash the bike, they will still not warranty the frame if it develops a crack. apparently the drive side chainstay, approx 4" from the BB, is "not a high stress part of the frame." so if it cracks there, chances are you either "stepped on the bike," or "picked up a stick or something on a ride which cracked the frame." it seems that in the course of normal riding a magical stick can be unnoticably kicked up from the road with enough force to snap a chainstay, while somehow not damaging the wheels, or getting caught up in the drivetrain. Even though they wont warranty the frame, the nice folks at trek will be happy to charge you to repair it (plus shipping no less) so you can be back on the road and riding in only 4-6 weeks. awesome. I am now riding a Specialized frame (allez pro) which i have been more than pleased with thus far, and from recent experiences through the shop, specialized will indeed warranty a cracked driveside chainstay, and have a frame for you within a week. word. In conclusion if anyone wants to buy a newly repaired trek 5900 frame/fork (56 cm) in 4-6 weeks, drop me a line or look for it on ebay because i will never ride (or sell) another one of their bikes again. thank you and have a nice day.