And now Roberto Heras is guilty of EPO use?

I don't believe it. Why would the top athelete's at the top of their game under the closest of scrutiny be using the stuff? First Tyler Hamilton and his "chimera", Lance 1999 samples, and now Roberta? I know there is faulty science in the detection as some atheletes who had non-negative samples were exonerated. If you have read the latest here are some links

http://www.velonews.com/race/int/articles/9144.0.html

and a perspective that I like

http://velogal.blogspot.com