These are some lines from syslog. Where could I find the problem ?
Oct 12 15:13:15 nod2 /usr/local/sbin/kamailio[23102]: DEBUG: <core> [sr_module.c:625]: find_export_record: found <load_tm> in module tm [/usr/local/lib/kamailio/modules/tm.so]
Oct 12 15:13:15 nod2 /usr/local/sbin/kamailio[23102]: DEBUG: <core> [sr_module.c:625]: find_export_record: found <t_newtran> in module tm [/usr/local/lib/kamailio/modules/tm.so]
Oct 12 15:13:15 nod2 /usr/local/sbin/kamailio[23102]: DEBUG: <core> [sr_module.c:625]: find_export_record: found <t_relay_to_tcp> in module tm [/usr/local/lib/kamailio/modules/tm.so]
Oct 12 15:13:15 nod2 /usr/local/sbin/kamailio[23102]: DEBUG: <core> [sr_module.c:625]: find_export_record: found <t_relay_to_udp> in module tm [/usr/local/lib/kamailio/modules/tm.so]
Oct 12 15:13:15 nod2 /usr/local/sbin/kamailio[23102]: DEBUG: <core> [sr_module.c:625]: find_export_record: found <t_relay> in module tm [/usr/local/lib/kamailio/modules/tm.so]
Oct 12 15:13:15 nod2 /usr/local/sbin/kamailio[23102]: DEBUG: <core> [sr_module.c:625]: find_export_record: found <t_forward_nonack> in module tm [/usr/local/lib/kamailio/modules/tm.so]
Oct 12 15:13:15 nod2 /usr/local/sbin/kamailio[23102]: DEBUG: <core> [sr_module.c:625]: find_export_record: found <t_release> in module tm [/usr/local/lib/kamailio/modules/tm.so]
Oct 12 15:13:15 nod2 /usr/local/sbin/kamailio[23102]: <core> [mem/q_malloc.c:366]: qm_malloc(0xb4ff8000, 24) called from tm: t_hooks.c: insert_tmcb(159)
Oct 12 15:13:15 nod2 /usr/local/sbin/kamailio[23102]: <core> [mem/q_malloc.c:406]: qm_malloc(0xb4ff8000, 24) returns address 0xb516d824 frag. 0xb516d80c (size=24) on 1 -th hit
Oct 12 15:13:15 nod2 /usr/local/sbin/kamailio[23102]: DEBUG: <core> [sr_module.c:625]: find_export_record: found <bind_sl> in module sl [/usr/local/lib/kamailio/modules/sl.so]
Oct 12 15:13:15 nod2 kernel: [693453.525967] kamailio[23102]: segfault at 0 ip (null) sp bfe37c8c error 4 in kamailio[8048000+1d1000]