The Boost.Threads regression results for meta-como-win32-4.3.3-vc7 at http://boost.sourceforge.net/regression-logs/developer/thread.html all fail because: <quote> "C:\Users\Administrator\boost\main\boost\boost/config/requires_threads.hpp", line 29: catastrophic error #35: #error directive: "Threading support unavaliable: it has been explicitly disabled with BOOST_DISABLE_THREADS" # error "Threading support unavaliable: it has been explicitly disabled with BOOST_DISABLE_THREADS" </quote> The reason BOOST_DISABLE_THREADS is defined is because -DBOOST_DISABLE_WIN32 being passed on the command line. Does anyone know whether this option is on the command line on purpose, or should I consider it a configuration error for that toolset? Mike