During the upgrade a copy of the original 2.22. db was coppied to the mysql bugzillaupgrade db. This is ~700M. Once the bz3 upgrade has had a month to settle this should be nuked and the db permissions relating to it removed. Likewise /srv/bugs../www-old can be nuked.
remove bugs-update dns name, put security for xorg-security email handling in place
db nuked, permissions cleaned, www-old nuked, dns cleaned up.