Please visit Clif Bar’s website for full details.  This was pulled from their website:
On January 19, 2009, we announced a voluntary recall of 14 U.S and 4 Canadian products including CLIF Bar, CLIF Builder’s, CLIF MOJO, CLIF Kid Organic ZBaR and LUNA Bar, in the U.S. and Canada because the peanut butter in those products [...]