/usr/ is in apt-watch-gnome 0.4.0-2.1ubuntu1.
This file is owned by root:root, with mode 0o775.
..
/usr/share/gnome-panel/4.0/
/usr/share/gnome-panel/4.0/applets/
/usr/lib/
/usr/lib/apt-watch/
/usr/lib/apt-watch/apt-watch
/usr/share/
/usr/share/apt-watch/
/usr/share/apt-watch/apt-watch.ui
/usr/share/doc/
/usr/share/doc/apt-watch-gnome/
/usr/share/doc/apt-watch-gnome/copyright
/usr/share/gconf/
/usr/share/gconf/schemas/
/usr/share/gconf/schemas/apt-watch.schemas
/usr/share/gnome-panel/
/usr/share/gnome-panel/4.0/applets/org.gnome.panel.Apt_Watch.panel-applet
/usr/share/doc/apt-watch-gnome/README
/usr/share/doc/apt-watch-gnome/TODO
/usr/share/doc/apt-watch-gnome/changelog.Debian.gz