Hi, I've installed a new instance of Kamailio 3.1 without prb and it works fine. However, in order to activate siptrace, I've added the following lines in the config file, loadmodule "siptrace.so" modparam("siptrace","db_url", DBURL) modparam("siptrace","table","sip_trace") modparam("siptrace","trace_on",1) modparam("siptrace","trace_flag",13) I had the following message in kamailio logs: Dec 1 17:17:55 km36133 /usr/sbin/kamailio[5522]: INFO: usrloc [hslot.c:53]: locks array size 512 Dec 1 17:17:55 km36133 kernel: [10765022.447713] kamailio[5522]: segfault at 0 ip 0 sp 7fffffffc748 error 4 in kamailio[400000+1f7000] Dec 1 17:17:55 km36133 kamailio: ERROR: <core> [daemonize.c:269]: Main process exited before writing to pipe Is it a known issue? Do you have an idea how to fix that, or at least how to activate siptrace module without craching Kamailio. Regards.