/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/ is in plasma-nm 0.9.3.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/config/
/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/config/main.xml
/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/ui/
/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/ui/CompactRepresentation.qml
/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/ui/ConnectionItem.qml
/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/ui/Header.qml
/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/ui/ListItem.qml
/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/ui/SwitchButton.qml
/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/ui/Toolbar.qml
/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/ui/TrafficMonitor.qml
/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/ui/config.ui
/usr/share/kde4/apps/plasma/plasmoids/org.kde.networkmanagement/contents/ui/main.qml