I'm having a weird problem on a two-week old 13" MBP. When I plug in headphones whatever sound was playing, if any, will stop for 10-15 seconds and during this time the volume keys on the keyboard are unresponsive (along with any keyboard keys that operate hardware things...backlight for keyboard, display brightness, although the dashboard and expose keys work). Same goes if I unplug the headphones. If i'm in iTunes, i get a beachball isolated to iTunes during this. When iTUnes recovers from the beachball it "realizes" that it should have actually been playing for the last ten seconds and catches up. Anyone else have this? I fresh install snow leopard a few days ago. Why would plugging/unplugging headphones (they are the ones that came with my iPhone 3GS) give a beachball in iTunes?