/etc/hosts has 'ubuntu' as for 127.0.0.1 in oneiric, precise

$ tar -Sxvzf natty/current/natty-server-cloudimg-amd64.tar.gz
$ tar -Sxvzf precise/current/precise-server-cloudimg-amd64.tar.gz
$ for r in natty precise; do echo === $r === ;
   sudo mount -o loop,ro $r-server-cloudimg-amd64.img /mnt ;
   echo == build.info == ;
   cat /mnt/etc/cloud/build.info;
   echo == /etc/hosts ==;
   cat /mnt/etc/hosts;
   sudo umount /mnt
  done
=== natty ===
== build.info ==
build_name: server
serial: 20111219
== /etc/hosts ==
127.0.0.1 localhost

# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
=== precise ===
== build.info ==
build_name: server
serial: 20111219
== /etc/hosts ==
127.0.0.1 ubuntu

# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

The issue in the output above is 'ubuntu' as the 127.0.0.1 entry. That should read 'localhost'.