/usr/share/kde4/apps/solid/ is in kde-workspace-data 4:4.8.2a-0ubuntu4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/kde4/apps/solid/devices/
/usr/share/kde4/apps/solid/devices/solid-device-AcAdapter.desktop
/usr/share/kde4/apps/solid/devices/solid-device-AudioInterface.desktop
/usr/share/kde4/apps/solid/devices/solid-device-Battery.desktop
/usr/share/kde4/apps/solid/devices/solid-device-Block.desktop
/usr/share/kde4/apps/solid/devices/solid-device-Button.desktop
/usr/share/kde4/apps/solid/devices/solid-device-Camera.desktop
/usr/share/kde4/apps/solid/devices/solid-device-DvbInterface.desktop
/usr/share/kde4/apps/solid/devices/solid-device-NetworkInterface.desktop
/usr/share/kde4/apps/solid/devices/solid-device-OpticalDisc.desktop
/usr/share/kde4/apps/solid/devices/solid-device-OpticalDrive.desktop
/usr/share/kde4/apps/solid/devices/solid-device-PortableMediaPlayer.desktop
/usr/share/kde4/apps/solid/devices/solid-device-Processor.desktop
/usr/share/kde4/apps/solid/devices/solid-device-SerialInterface.desktop
/usr/share/kde4/apps/solid/devices/solid-device-SmartCardReader.desktop
/usr/share/kde4/apps/solid/devices/solid-device-StorageAccess.desktop
/usr/share/kde4/apps/solid/devices/solid-device-StorageDrive.desktop
/usr/share/kde4/apps/solid/devices/solid-device-StorageVolume.desktop
/usr/share/kde4/apps/solid/devices/solid-device-Video.desktop
/usr/share/kde4/apps/solidfakenetbackend/fakenetworking.xml