Comment 120 for bug 672177

@Clint: it's back. On Natty 11.04 I am getting unclean inodes again. I notice a single inode in dmesg after every boot:
$ cat /var/log/dmesg.0 | grep orphan
[ 4.470372] EXT4-fs (sda1): orphan cleanup on readonly fs
[ 4.470443] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 2228229
[ 4.470538] EXT4-fs (sda1): 1 orphan inode deleted

So I ran the test:

$ sudo -i
# apt-get install --reinstall libc6 && shutdown -r now

 on reboot:
$ dmesg | grep orphan
[ 13.408854] EXT4-fs (sda1): orphan cleanup on readonly fs
[ 13.408928] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 541072
[ 13.409078] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 541058
[ 13.409108] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 541055
[ 13.409138] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 541048
[ 13.409161] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 541045
[ 13.409187] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 541038
[ 13.409210] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 541032
[ 13.409233] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 541029
[ 13.409255] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 541028
[ 13.409279] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 541012
[ 13.409312] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 541007
[ 13.409336] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 540992
[ 13.409361] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 540791
[ 13.438394] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 540772
[ 13.438427] EXT4-fs (sda1): ext4_orphan_cleanup: deleting unreferenced inode 2228229
[ 13.438491] EXT4-fs (sda1): 15 orphan inodes deleted

Note: no portmap installed.

$ apt-cache policy sysvinit-utils
sysvinit-utils:
  Installed: 2.87dsf-4ubuntu23.1
  Candidate: 2.87dsf-4ubuntu23.1
  Version table:
 *** 2.87dsf-4ubuntu23.1 0
        500 http://us.archive.ubuntu.com/ubuntu/ natty-updates/main i386 Packages
        100 /var/lib/dpkg/status
     2.87dsf-4ubuntu23 0
        500 http://us.archive.ubuntu.com/ubuntu/ natty/main i386 Packages

Linux <> 2.6.38-13-generic #53-Ubuntu SMP Mon Nov 28 19:23:39 UTC 2011 i686 i686 i386 GNU/Linux