I'm getting an absolute ton of warnings - of the kind that are normally errors - from Boost.Test while working on Boost.Integer: compile-c-c++ ..\..\..\bin.v2\libs\integer\test\integer_test.test\msvc-9.0\debug \threading-multi\integer_test.obj integer_test.cpp d:\data\boost\trunk\boost/test/impl/execution_monitor.ipp(941) : warning C4535: calling _set_se_translator() requires /EHa d:\data\boost\trunk\boost/test/impl/execution_monitor.ipp(1128) : warning C4273: 'boost::execution_monitor::catch_signals' : inconsistent dll linkage d:\data\boost\trunk\boost/test/execution_monitor.hpp(190) : see previous definition of 'catch_signals' d:\data\boost\trunk\boost/test/impl/execution_monitor.ipp(1199) : warning C4273: 'boost::execution_monitor::execute' : inconsistent dll linkage d:\data\boost\trunk\boost/test/execution_monitor.hpp(173) : see previous definition of 'execute' d:\data\boost\trunk\boost/test/impl/execution_monitor.ipp(1340) : warning C4273: 'boost::execution_exception::execution_exception' : inconsistent dll linkage d:\data\boost\trunk\boost/test/execution_monitor.hpp(125) : see previous definition of '{ctor}' d:\data\boost\trunk\boost/test/impl/execution_monitor.ipp(1348) : warning C4273: 'boost::execution_exception::location::location' : inconsistent dll linkage d:\data\boost\trunk\boost/test/execution_monitor.hpp(117) : see previous definition of '{ctor}' d:\data\boost\trunk\boost/test/impl/debug.ipp(637) : warning C4273: 'boost::debu g::under_debugger' : inconsistent dll linkage and so on. Normally, I would put this down to a problem with Boost.Integer's Jamfile, but in this I see nothing wrong. Any ideas anyone? Thanks, John.