The kcm module does not show up in KDE 4.5 systemsettings. To make it reappear, change line 11 in /usr/share/kde4/services/synaptiks.desktop: - X-KDE-System-Settings-Parent-Category=keyboard-and-mouse + X-KDE-System-Settings-Parent-Category=input-devices
What happens if you apply the same change on kde-4.4? Could anyone check this please?
Fixed with upstream patch