My mac mini has been flawless since I purchased it 2 years ago and through all the OS updates since then. The latest supplemental update to 10.8.5 has introduced two issues I have never had before. 1. Startup now takes minutes to do. Goes to a white screen and will sit there for up to 3 minutes before I finally see the Apple symbol and the rotating element. It does start up just takes forever. 2. I have a USB My Passport drive I use for time machine backups. With the supplemental update, I now have to unplug the drive then replug it in to get it to appear on the desktop and for time machine to recognize it exists. Help???