There is a bug in OS X that may prevent you from quickly shutting down a computer with Fast User Switching enabled, if another user has applications open. When another user account is logged in and ...

It is the first thing you can try to bypass the problem temporarily. If one or more users are already logged in, you must shut down your PC again. You can restart your computer and then shut it down.

Fast User Switching is a useful feature in Windows that allows you to quickly switch between different accounts on your machine. If it's not used properly, though, it can lead to problems as your ...

If you would like to keep a specific user account more private, you can do so by removing it from the log-in window in OS X. Topher, an avid Mac user for the past 15 years, has been a contributing ...