i recently jus migrate over to mac. apple is more healthy than anything else.
but then there is this thing tat is very irritating, the loud startup sound. that u cannot really switch off, it still jus blast away even when you earpiece is plugged in, so did a goggle search and found this cool website which have a plug-in to system preference which will do just the job!
http://www5e.biglobe.ne.jp/~arcana/index.en.html
check them out.
you can switch off the startup sound, or adjust the volume to way max of too soft. or u can even mute it, which is very much the same as disabling the startup sound.