If you want to use multi-user, start with a clean system and do the following from a terminal (ctrl-alt-t)
sudo cp -rv .local .gconf .config .network-autostart .dmrc /etc/skel/
sudo mkdir /etc/skel/{Desktop,Documents,Music,Pictures,Videos,Downloads}
sudo /usr/lib/lightdm/lightdm-set-defaults -s une-efl
On reboot everything should work, no matter which user logs in.