Why did Lupe Fiasco postpone Lasers?

I've been waiting for Lupe Fiasco's Lasers for months, and now I see the date was postponed to early 2010. I don't mind that much since he released Enemy of the State: A Love Story, which I'm listening to right now and lovin, and he will also release Friend of the People later this month. But does anyone know exactly why he postponed Lasers?