There was an update that came out a few weeks ago for the 2012 MacBook Pros. Ever since then, when I wake up in the morning and open up my computer, the SuperDrive makes a sound (as if the computer is booting up) and then I see the login screen greyed out as a progress bar progresses at the bottom of my screen. Even after its gone, my computer lags for a while and I can't even move the mouse. Eventually, it'll let me enter my password and log in. What's going on? Does anyone else have this issue? I like how it was before, where I could shut my laptop, then open it an go right back to work after a sign-in. This has happened on multiple days for me and it feels like it slows my computer down a lot (and it only happens after the computer has been shut for an extended period of time) yet there's nothing running in the background. If I close the laptop and come back to it soon, it'll behave normally and it won't lag on me.