The version you requested (3.16.0-26.35~14.04.1) is not available, but a newer one is (3.16.0-38.52~14.04.1). We redirected you there.
This file is indexed.

/etc/gconf/gconf.xml.mandatory/ is in gconf2-common 3.2.5-0ubuntu2.

This file is owned by root:root, with mode 0o755.