It seems that when you use ptrace against a cloned process, it sends you the exit_signal on any state change. Thismay surpise (and does suprise) gdb and strace. I suspect thatit ought to send SIGCHLD no matter what the exit_signal is.Any thoughts?Philip-- Philip Gladstone +1 617 487 7700Raptor Systems, Waltham, MA http://www.raptor.com/