/usr/ is in php-horde-openxchange 1.0.0-5build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/php/
/usr/share/php/.registry/
/usr/share/php/.registry/.channel.pear.horde.org/
/usr/share/php/.registry/.channel.pear.horde.org/horde_openxchange.reg
/usr/share/php/Horde/
/usr/share/php/Horde/OpenXchange/
/usr/share/php/Horde/OpenXchange/Exception.php
/usr/share/php/Horde/OpenXchange/EventsAndTasks.php
/usr/share/php/Horde/OpenXchange/Tasks.php
/usr/share/php/Horde/OpenXchange/Contacts.php
/usr/share/php/Horde/OpenXchange/Base.php
/usr/share/php/Horde/OpenXchange/Events.php
/usr/share/doc/
/usr/share/doc/php-horde-openxchange/
/usr/share/doc/php-horde-openxchange/package.xml
/usr/share/doc/php-horde-openxchange/changelog.Debian.gz
/usr/share/doc/php-horde-openxchange/copyright