[Boost-users] is_sequence

Is boost::mpl::is_sequence supposed to work with gcc 3.2.2 ? I'm trying to use it, but get "false" for boost::mpl::is_sequence::value using boost 1.31.0. The same happens with boost::mpl::has_begin. I'm working with FreeBSD 5.1. Any hints how to get it to work would be greatly appreciated. Wolfgang Meyer