Yes, it is Ubuntu and AppArmor is disabled and uninstalled (like howto 9instructed.)
Since building this server with Ubuntu 8.04.1 and ISPConfig 2.2.27 (in July 2008, I think) I have never run
apt-get update and/or apt-get upgrade
If I am having an issue with bind9, I would hate to compound the issue by upgrading.
It was working fine until 10:00am yesterday and that is about the same time my dns nameserver settings were corrected at GoDaddy.
Could the info connecting between their dns servers and my bind9 be an issue?