Broken seatpost rail.
From http://picasaweb.google.com/thisnthatntother/Fail?authkey=8ePsxVY29kw# as of 2008/12.
Accompanying text says
SDG Ventura (non-titanium) rail failure. After 10 long years of abuse and suffering. The rails have been bent for over a year and I had the saddle way back on the seat post. broke just after the seatpost clamp (easton) SDG asked me to send it in, they're going to try and dig up some old rails for me. if they can't my next saddle will be an SDG, shame I can't find another pimp silver glitter one though.
Rider weight approx. 80 kgf.
See also FAIL-093.html