Found the reason :P
Phantom Planet have lost their star drummer. On Monday, Jason Schwartzman posted on the band's Web site, www.phantomplanet.com, that he's left the band "to pursue other things," namely, acting (he had previously made a name for himself for his lead role in "Rushmore"). Phantom Planet were halfway through recording their follow-up to 2002's The Guest with producer Dave Fridmann when Schwartzman gave notice, so he will appear on the new album, due in January, but not on all of the songs. Phantom Planet have started rehearsing with a new drummer, Jeff Conrad, for their upcoming set at the Sunset Junction Street Fair in Los Angeles on August 24. In the meantime, the band's track "California" can be heard as the theme song for the "The OC," which premieres Tuesday (August 5) on Fox. ...