^ that probably didnt happen whilst the bike was being ridden though did it? Im guessing it happened when the rider crashed and the bike hit something?
I've had one for two and a half years, and it's supported my 13+ stone bulk bouncing up and down on it, as I lug my fat gut up hills, then supported said fat gut as I piledrive the saddle on the downhills! For thirty something quid it's great value.