>>#4 0x810b5c0 in on_signal (sig_num=11) at main.c:471 >Signal 11 is a segfault (what Windows would have called an Access >Violation, or GPF). We should fix that segfault... Yes, I know that. The problem is that segfault happens in the signal handler for segfault itself. _() for segfault message was worked well in many situation, but once something wrong happened, it causes infinite loop. -- SHIRASAKI Yasuhiro : Experimental Particle Physics, JLC Team Graduate School of Science, TOHOKU University 980-8578 Japan.