From Fedora Project Wiki
< KDE
Do you prefer to use the old NetworkManager gui instead of knetworkmanager? If so just follow these simple instructions to enable it by default. Thanks to Rex Dieter for the instructions.
- mkdir ~/.kde/share/autostart
- cp /etc/xdg/autostart/nm-applet.desktop ~/.kde/share/autostart/
- cp /usr/share/autostart/kde4-knetworkmanager-autostart.desktop ~/.kde/share/autostart/
then use systemsettings->(advanced)->autostart to
1. enable nm-applet
2. disable knetworkmanager