Here is an Asterisk on Redhat Enterprise 4.
Asterisk Restarted after some hours and start again (run with safe_asterisk).
I am using SIP and H323 .
There is no any dumped core and the line below is from a Full log and I see there is nothing and after 4 sec (which is defined in safe_asterisk) it is restarting.
[Dec 1 10:33:08] VERBOSE logger.c: – 14085178191 has cleared the call
[Dec 1 10:33:08] DEBUG chan_h323.c: Cleaning connection to ip$localhost/15122
[Dec 1 10:33:12] VERBOSE logger.c: Asterisk Event Logger Started /var/log/asterisk/event_log
[Dec 1 10:33:12] VERBOSE logger.c: Asterisk Dynamic Loader Starting:
Thanks for your attention.