I'm getting errors building signals with MSVC10 beta 2. Build errors follow: boost/iterator/iterator_facade.hpp(528) : error C2039: 'decrement' : is not a member of 'boost::signals::detail::named_slot_map_iterator' boost/signals/detail/named_slot_map.hpp(81) : see declaration of 'boost::signals::detail::named_slot_map_iterator' boost/iterator/iterator_facade.hpp(681) : see reference to function template instantiation 'void boost::iterator_core_access::decrement<Derived>(Facade &)' being compiled with [ Derived=boost::signals::detail::named_slot_map_iterator, Facade=boost::signals::detail::named_slot_map_iterator ] boost/iterator/iterator_facade.hpp(680) : while compiling class template member function 'boost::signals::detail::named_slot_map_iterator &boost::iterator_facade<Derived,Value,CategoryOrTraversal>::operator --(void)' with [ Derived=boost::signals::detail::named_slot_map_iterator, Value=boost::signals::detail::connection_slot_pair, CategoryOrTraversal=boost::forward_traversal_tag ] boost/signals/detail/named_slot_map.hpp(85) : see reference to class template instantiation 'boost::iterator_facade<Derived,Value,CategoryOrTraversal>' being compiled with [ Derived=boost::signals::detail::named_slot_map_iterator, Value=boost::signals::detail::connection_slot_pair, CategoryOrTraversal=boost::forward_traversal_tag ] boost/iterator/iterator_facade.hpp(546) : error C2039: 'advance' : is not a member of 'boost::signals::detail::named_slot_map_iterator' boost/signals/detail/named_slot_map.hpp(81) : see declaration of 'boost::signals::detail::named_slot_map_iterator' boost/iterator/iterator_facade.hpp(694) : see reference to function template instantiation 'void boost::iterator_core_access::advance<Derived>(Facade &,__w64 int)' being compiled with [ Derived=boost::signals::detail::named_slot_map_iterator, Facade=boost::signals::detail::named_slot_map_iterator ] boost/iterator/iterator_facade.hpp(693) : while compiling class template member function 'boost::signals::detail::named_slot_map_iterator &boost::iterator_facade<Derived,Value,CategoryOrTraversal>::operator +=(__w64 int)' with [ Derived=boost::signals::detail::named_slot_map_iterator, Value=boost::signals::detail::connection_slot_pair, CategoryOrTraversal=boost::forward_traversal_tag ]