Asterisk 1.6 restarting


I am running Asterisk on CentOS release 4.8 and I am having problems with Asterisk restarting at random times.
The only thing I can see in any logs is this message from udevd:
Jan 11 10:18:17 localhost udevd[1362]: udev done!
Jan 11 10:18:31 localhost last message repeated 2 times

Does anyone have any idear what could cause this? … +Backtrace