Quality control is a big concern for them. So much so that they have moved production for their 2010 frames.
Several people have broke more than one of their frames, me being one. Cracked two frames inside 6 months, with the second frame being in winter hibernation for 3 of those. Sat waiting for the second to be replaced with Madison suffering quite a backlog from what I understand.
I wouldn't buy another, thats for sure. If I can't ride a 5.5 inch 'trail' bike as hard as I can my 5 year old Cannondale hardtail with 100mm forks (the original Crack n fail) without it breaking then I'd say there's issues.
That said, when it wasn't broke it rode really well, just be prepared to be without it for 2 months of the year.