I recently bought a 15 inch 1.67 GHZ PB. The original estimated shipping date was August 3rd, but it has now been changed to Aug 12. I got an email from apple this morning saying it was because of an "unexpected delay." Do you think they are holding off shipping until an update comes off, or is it really some kind of delay? This isn't good because I need it for my college which starts of August 14th. I hope I can get them to upgrade the shipping.