|Linux Automatic Timed Login|
|Changes to Make||Under the section labeled [daemon], add the following lines;|
Note that these configuration lines are exclusive to automatic login. You can have one or the other but not both. And that's what timed automatic login is supposed to provide, the best of both worlds. With a value of 60 (seconds) most users have plenty of time to login into a alternate account before the timeout is reached for the default account.
Again it should be noted that the file requires root access for editing, so use the recommended method for your given distribution.
For a complete listing of all Gnome gdm configuration options, you should avail yourself of Gnome Library GDM Configuration.