Hi all, some time my application die from back trace this is what I see: #0 0x400369d5 in pthread_handle_sigrestart () from /lib/i686/libpthread.so.0 #1 <signal handler called> #2 0x420292e5 in sigsuspend () from /lib/i686/libc.so.6 #3 0x40036679 in __pthread_wait_for_restart_signal () from /lib/i686/libpthread.so.0 #4 0x40032f2c in pthread_cond_wait () from /lib/i686/libpthread.so.0 #5 0x40017bf2 in ?? () #6 0x080628e0 in boost::detail::function::void_function_obj_invoker0<PacketSwitcher<PacketContainer<IpPacket*> >, void>::invoke(boost::detail::function::any_pointer) () at buffer.h:106 #7 0x4001a646 in ?? () #8 0x40033fef in pthread_start_thread () from /lib/i686/libpthread.so.0 I'm using the version boost 1.31 ( just the thread library ) am I missing something or is a known problem? Regards Gaetano Mendola