Hi everybody here, I want to ask you a question, how long do you need to shut down your Mavericks system DP4 or dp5? It usually spends above 15 seconds to shut it down, is it normal? because in my previews system，like Mavericks DP2，it needs only just about 2-3 seconds to shut down the system. it's very fast! by the way, if I start my system and do nothing, just shut it down, it's very fast, about two or three seconds, but if I open some applications, like pages, or text editor, it becomes very slow to shut it down.