I have just tried to record something using the built in mic in my 2.33Ghz MBP (end of 2006 model) and it sounds really bad. Its like its recorded in very low bitrate, similar to how "real audio" encoded audio sounds at low bitrate. Warbly/flange effect It sounds the same in imovie and logic. On my MB the sound is perfect. Have i just got a dodgy mic or ?