Thanks! I can confirm your fix worked on my 10.04 installation. apt automatically created a usr.sbin.dhcpd3.dpkg-dist in the apparmor directory, because LMCE has modified the standard config to let it read bind's files. With your fix applied to the config file, here's the diff that LMCE had in it
/etc/apparmor.d# diff -u usr.sbin.dhcpd3 usr.sbin.dhcpd3.dpkg-dist
--- usr.sbin.dhcpd3 2013-06-02 22:45:15.825854835 -0400
+++ usr.sbin.dhcpd3.dpkg-dist 2013-05-23 21:38:06.000000000 -0400
@@ -49,7 +49,4 @@
- # Let dhcpd read bind's config files
- /etc/bind/** r,
Thanks for researching the fix!