Thorsten, The following bug in ptr_container is marked as a Showstopper for the 1.45 release. What are your plans for it? If you're planning on fixing it, can you do so soon? If you feel it is not a showstopper, can you set its priority appropriately? https://svn.boost.org/trac/boost/ticket/4598 Thanks, -- Eric Niebler BoostPro Computing http://www.boostpro.com