Not sure if this is supposed to happen, so I thought I'd ask. I recently just got the new MBP, late 2011. And I checked on software update and it was updating iTunes and EFFI. After it restarted, it made a weird noise before going to the traditional OS X start up sound, is this right? I'm a bit paranoid that it's somehow harmful. I've reinstalled Mac OS X Lion 3 times and still made that noise.