Misread the post I know what you mean now. The item you mention would not under the logout section which seems to be the 4 options you mention. On mine it is a seperate item in the KDE menu located as second one up from the logout item in the kmenu.
Now why it is not there can be because of a few things off the top of my head. I wonder if you have this line in /etc/X11/xdm/kdmrc. Check to see if there and not remmed out.
If a # is infront remove it or if not there then place it under the General section like this.
# Default is ":0"
# List of on-demand displays. See StaticServers for syntax.
# Default is ""
Now restart X server if that was remmed out or missing.
If that does not do it then do the following.
Copy /usr/share/config/kdeglobals to /home/username/.kde/share/config
username represents your username home folder.
Then edit the copied version of kdeglobals and in the [KDE Action Restriction] section and add the following to it.
Logout and login may do it but may require a restart of the X server.
Last edited by Brian1; 11-23-2007 at 10:53 AM.