I agree with Nonymous666's concern about not wanting to allow guests, it allows anyone to bypass my lock screen on my tablet by simply choosing guest, and they have access to all my files, photos, videos, and music. The only thing they don't have access to are what apps i have installed, and who cares those are all public apps. Before if someone stole my tablet it would be a paperweight for them now they can log in as a guest and they have a new tablet. This should really be something easier to turn off. The right way to do multiple users should be allowing me to create a guest account if i want one. not letting someone without the passcode create a new account with access to all my files.