Yes, it is. But now it seems that they crash at the same point in code. Here is bt (only 4 core, not 5): http://tmp.lehis.ru/tmp/kam_bt_27333.txt http://tmp.lehis.ru/tmp/kam_bt_27334.txt http://tmp.lehis.ru/tmp/kam_bt_27336.txt http://tmp.lehis.ru/tmp/kam_bt_27337.txt