Yesterday’s Open Source was the last from the webcentric pubradio talk show, which went “on a summer hiatus” and is disbanding its staff, wrote host Chris Lydon and producer Mary McGrath on the show’s blog. They hope to maintain the blog and to relaunch the show in the fall. Why shut down? They explained that “a brand-name media company that had asked to partner with us had changed its mind.” The show was running out of money despite a $250,000 grant from the MacArthur Foundation in March and recent listener donations. The Boston-based show’s distributor, PRI, and its home station, WGBH, dropped it in recent weeks, the Boston Phoenix reported. Mike Janssen profiled the show in Current. More in Current’s next issue.