Asterisk 1.6 restarting

Hi

I am running Asterisk 1.6.2.18 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?

wiki.asterisk.org/wiki/display/ … +Backtrace