Symptom: Plesk 11 comes installed with Bind9 but the DNS Server will not start.
Solution: There is a known conflict with apparmor in Ubuntu 10.04 LTS
1. sudo /etc/init.d/apparmor stop
2. Add the following to the apparmor profile: /etc/apparmor.d/usr.sbin.named
# plesk runs bind in chroot, need perms
3. sudo /etc/init.d/bind9 start
4. sudo /etc/init.d/apparmor start
5. sudo /etc/init.d/psa stop
6. sudo /etc/init.d/psa start
Bind9 / DNS Service should now be enabled in the control panel.