I'm experiencing random crashes, too. Winedbg shows this after the crash: Code: fixme:winsock:WSAIoctl SIO_GET_EXTENSION_FUNCTION_POINTER: unimplemented AcceptEx fixme:winsock:WSAIoctl SIO_GET_EXTENSION_FUNCTION_POINTER: unimplemented GetAcceptExSockaddrs fixme:winsock:WSAIoctl SIO_GET_EXTENSION_FUNCTION_POINTER: unimplemented TransmitFile err:seh:raise_exception Unhandled exception code c0000005 flags 0 addr 0x7ef8f431