--- /Users/Orca/Downloads/boost_1_42_0/boost/thread/detail/thread.hpp	2009-10-30 12:50:13.000000000 +0300
+++ /usr/local/include/boost/thread/detail/thread.hpp	2010-02-13 19:17:23.000000000 +0300
@@ -346,7 +346,7 @@
 #ifdef BOOST_HAS_RVALUE_REFS
     inline thread&& move(thread&& t)
     {
-        return t;
+        return static_cast<thread&&>(t);
     }
 #else
     inline detail::thread_move_t<thread> move(detail::thread_move_t<thread> t)