I've got a /usr/share/services/knetworkmanager_pptp.desktop with the contents listed below. However, changing the service name to pptp as described on the message you linked, did not help. May be there are some settings missing or some of them need to be changed.
[Desktop Entry] Encoding=UTF-8 Type=Service Icon= ServiceTypes=KNetworkManager/VPNPlugin X-KDE-Library=knetworkmanager_vpnc X-NetworkManager-Services=vpnc X-KDE-PluginInfo-Author=Helmut Schaa [EMAIL PROTECTED] X-KDE-PluginInfo-Name=knetworkmanager_vpnc X-KDE-PluginInfo-Version=0.1 X-KDE-PluginInfo-Website= X-KDE-PluginInfo-Category=VPNService X-KDE-PluginInfo-Depends= X-KDE-PluginInfo-License=GPL X-KDE-PluginInfo-EnabledByDefault=false Name=VPNC Name[bn]=ভপএনস Name[xx]=xxVPNCxx Comment=VPNC Comment[bn]=ভপএনস Comment[xx]=xxVPNCxx X-Ubuntu-Gettext-Domain=desktop_knetworkmanager -- vpn pptp on Kubuntu is not available https://bugs.launchpad.net/bugs/151867 You received this bug notification because you are a member of Kubuntu Team, which is subscribed to knetworkmanager in ubuntu. -- kubuntu-bugs mailing list [EMAIL PROTECTED] https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs