I love my MBP, but one problem has been driving me crazy... After I wake from sleep (or start up, etc.), the first time the computer makes any sound (from any application like iTunes or a system volume change, etc.), the sound is preceded by a pretty loud "POP" sound from the computer speakers (or from external speakers if they're hooked up). Then the music (or whatever sound it's supposed to be making) starts. It only does this the first time after each time it wakes up, and it sounds like the computer is "turning on" the speakers/sound output/whatever. It does this pretty loudly, though, and it's really annoying--especially because I use my computer for an alarm. Every day, I wake up to the loud *POP* followed by some nice quiet music. My MBP does this EVERY time it wakes from sleep and regardless of what application causes the sound. I assumed that it was a normal (and very annoying) noise that was supposed to happen, but my girlfriend's new MB does not do it. I was wondering if (1) anyone else has this problem and is it normal/supposed to happen and (2) anyone has an idea about how to stop it if it isn't supposed to happen (resetting PRAM? SMC?). Thanks in advance for the help.