To speed the computer shutdown procedure, Mac OS X 10.6, aka Snow Leopard, will send SIGKILL to applications that have marked themselves "clean" resulting in faster shutdown times with, presumably, no ill effects.
为了加速计算机关闭过程，Mac OS X 10.6，也称为雪豹，会将SIGKILL发送给已经标记它们自己为“干净”的应用程序，以加快关机速度，同时，很可能地，没有坏作用。