The page is obsolete and needs some work to be applicable to Fedora 19.
lightdm should be mentioned. It's the default display manager for new installs of LXDE spin of Fedora 19.
The display manager is selected by systemctl in Fedora 19. Changing /etc/sysconfig/desktop would have no effect.
The version of LXDE keyboard switcher shipped with Fedora 19 can configure keyboard layouts, not just switch between them. Older versions of Fedora didn't have that capability. Not sure about the exact Fedora version that introduced it. The section names "Configure alternative keyboard layouts" may need to be removed or marked as obsolete.
Perhaps it would be nice to specify which versions of Fedora are supported by this page. I suggest that we don't try to support more versions than Fedora does (that it, the latest and the previous versions of Fedora).