Either that's a new feature for Lion or your Mac has some serious security issues.
"Automatic" login should only function at boot time. If you log out and arrive directly at the login window (i.e., without restarting), then —at that point —selecting any username to login should prompt for a password. [except perhaps a password-less Guest account, maybe.]
Last edited by Hal Itosis; 12/15/11 06:10 PM.
