[boost] multi_index bug?

Hi, I've got this container: typedef boost::multi_index_container< torrent_t, boost::multi_index::indexed_by< // boost::multi_index::hashed_unique<boost::multi_index::member<torrent_t, int, &torrent_t::id>>, boost::multi_index::ordered_unique<boost::multi_index::member<torrent_t, int, &torrent_t::id>>, boost::multi_index::sequenced<> >

torrents_t;

I'm using the find() member to find elements. When I use hashed_unique, it seems to be unable to find some elements, while it finds all if I use ordered_unique. This is with Boost 1.46.1.1 (Debian) and gcc version 4.6.1 (Debian 4.6.1-4) Is this a known issue? Olaf