How To: Disable auto login in Mac OS X

This video shows how to enable automatic login for Macintosh Operating System users:

1.Click on the Apple icon in the top-left corner and select System Preferences.
2.Click on the Security icon.
3.When the Security screen appears, click on the Lock icon at the bottom left.
4.Enter the name and password that will allow you to make changes to the system and click OK.
5.Un-check the box that's on the left of “Disable automatic login.€
6.Now you have to select the name that you want to automatically log in and enter the password for that name.
7.Click on the Lock icon to prevent further changes from being made.

After following theses steps, your computer will automatically log you into the name you selected in step number six.