[Boost-users] boost::thread join() and DLL unloading

My dll seems to be hanging in the when passed to regsvr32 I debugged through it and it is in deadlock on a boost::thread::join() The call stack tells me: The DLL is unloading The destructor to a global has been called That global contains a boost::thread object, on which join() has been called. (The boost::thread procedure has already exited) join() never returns. I've googled for a few hours and seen people mention something to the effect of "you cannot call join from DllMain" and "while DLL is unloading", but no explanation or alternative. How would I go about fixing this problem? I don't think I can guarentee noone will ever make a global instance of my class....