Python "multiprocessing" and sockets
It seems obvious in retrospect (doesn't it always), but using the multiprocessing module doesn't exempt you from the fundamental laws of UNIX. Laws such as "forks duplicate file descriptors". Consequently, when you launch a multiprocessing.Process() and pass it a socket, ensure that you close the socket in the parent. If you don't, it will stay open after the child has closed it, resulting in leaking badness.
