Looks like they have finally admitted that it isn't/didn't work:
http://www.google.com/hostednews/ap/...SxVPAD9G0M3BO3
"COVINGTON, La. — As the nation remained transfixed by a busted oil well spewing millions of gallons of crude into the Gulf of Mexico, BP said Saturday that its latest bid to plug the worst oil spill in U.S. history still hadn't worked and scientists suggested any progress was incremental at best.
BP PLC chief operating officer Doug Suttles told reporters Saturday in Port Fourchon that the effort known as a "top kill" has not stopped the flow of oil, and that he doesn't know if the risky maneuver will succeed. He said the company was already preparing its next option to cap the well...."