Hi, I have a problem with boost::signals when I try to use them in multi threaded projects. I have tried gcc 3.2.3 and gcc 3.3.2, on two different Linux boxes, with the same result. The following test program works fine w/o threads and crashes after the 17th call to connect if I add -pthread to the compile command: #include void on_do_something () { } int main () { boost::signal sig; for (int i = 0; i < 100; ++i) sig.connect (&on_do_something); } I have tried electric fence, then it crashes immediatly in the first call to pthread_mutex_init, but I can't see any reason for that crash with gdb. Once again, even with electric fence, everything works fine w/o threads, so I see no mem corruption or any reason why it should not work _with_ threads. Any idea? Thanks Uwe