Commenting out the line below in /etc/rc.c/rc.local stopped "[extnodes]" from printing on my console. Time will tell if it stopped the kernel panic too. 

/etc/rc.d/rc.updatenodelist &

--
Tim
:wq

Begin forwarded message:

Date: December 27, 2010 9:28:13 AM PST
To: App_rpt-users@ohnosec.org
Subject: [App_rpt-users] extnodes?

My CentOS console it printing "[extnodes]" every 15 minutes or so. Anybody know what that means and is related to my system crashing every few days?
--
Tim
:wq