As per title, the shutdown times on my Macbook Pro Retina 15" mid 2014 running Yosemite with all the latest updates have went from 1 second to 33 seconds on average. I read other posts and seen people recommending deleting old files in the LaunchDaemons and LaunchAgents folders. I did that to no avail. I then download CleanMyMac 2 and ran that, deleted all the old files, broken login items etc etc etcccc. Nothing works. I'm new to OSX, however I'm very computer literate. I have no idea what to do. Any help would be appreciated. P.S. I'm closing all open applications before shutting down, doesn't make a difference.