/usr/ is in kubuntu-active-default-settings 12.04.0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/xsessions/
/usr/share/xsessions/plasma-active.desktop
/usr/share/kubuntu-active-default-settings/
/usr/share/kubuntu-active-default-settings/share/
/usr/share/kubuntu-active-default-settings/share/config/
/usr/share/kubuntu-active-default-settings/share/config/kcminputrc
/usr/share/kubuntu-active-default-settings/share/autostart/
/usr/share/kubuntu-active-default-settings/share/autostart/plasma-desktop.desktop
/usr/share/kubuntu-active-default-settings/share/autostart/printer-applet.desktop
/usr/share/kubuntu-active-default-settings/share/autostart/akonaditray.desktop
/usr/share/doc/
/usr/share/doc/kubuntu-active-default-settings/
/usr/share/doc/kubuntu-active-default-settings/copyright
/usr/share/doc/kubuntu-active-default-settings/changelog.gz