Auto Mute silences your startup and makes you less of a public nuisance
Not only will your computer be silent at startup, it'll actually be silent afterward, too -- until you tell Auto Mute to turn sound back on again. Auto Mute is easily accessible in your system tray, and can also be controlled by hotkeys.
Auto Mute doesn't need to be installed, either, so you can put it on your flash drive along with Download Squad's other favorite portable apps. Go forth and boot up in public with no fear of shame!