Why is OPEC’s oil production increase not calming prices?

From the BBC World Service: The group of major oil producing nations, including the likes of Saudi Arabia, agreed to cautiously increase production. They didn't, however, throw oil out of the group, and oil markets today seem little moved by the news. We ask why. Also, as Jubilee celebrations continue in Britain – we'll take you out to the world of cake, bunting and fizz at the U.K.'s street parties.
The team
David Brancaccio
Host
Victoria Craig
Host, BBC
Stephen Ryan
Producer, BBC
Jonathan Frewin
Producer, BBC
Jay Siebold
Technical Director
Jesson Duller
Media Producer
Meredith Garretson
Producer
Erika Soderstrom
Producer
Rose Conlon
Producer
Alex Schroeder
Producer
Redmond Carolipio
Digital Producer
Ariana Rosas
Producer/Director