I took my 2005 Roubaix to my lbs for maintenance and the first thing the owner said to me was "that seat post is dangerous." He then told me about a guy whose seat post broke when he hit a bump. It snapped at the zertz insert. So far, all I've found about this are a few comments on road bike review.com reviews of the seat. Only one person actually had one snap and other people say it was a defect on early models that's been fixed. Anyone know of a thread I've missed or have any information on this? Is it safe?