I am running BIND 9.2.1 for NT. Named crashes fairly regularly (every 4 to 5 days): Jun 21 06:41:52.917 socket.c:1567: INSIST(!sock->pending_recv) failed Jun 21 06:41:52.947 exiting (due to assertion failure) Can anyone share some thoughts with me please? Thanks. Regards, Stanley Liu stanley.liu at toyota.com.au