Probably even more relevant: downgrading the PHP5 packages to 5.5 (from 5.6) fixes the problem. This sounds like either a bug in PHP 5.6 or a requirement to port Owncloud to that version of PHP.
Roland. -- Roland Mas [...] ou une dent pourrie [...] -- in Variations sur un thème imposé -- Signatures à collectionner, série n°2, partie 2/3. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org