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$ sudo grep dbus-daemon-launch /home/share/neo/20*/var/log/auth.log
/home/share/neo/2009-05-29/var/log/auth.log:May 29 01:40:49 ginger sudo:    lindi : TTY=pts/5 ; PWD=/usr/share/doc/dbus ; USER=root ; COMMAND=/bin/chmod u-x /usr/lib/dbus-1.0/dbus-daemon-launch-helper

$ sudo grep dbus-daemon-launch /home/share/neo/20*/home/lindi/.bash_history
/home/share/neo/2009-05-29/home/lindi/.bash_history:ls -l  /usr/lib/dbus-1.0/dbus-daemon-launch-helper
/home/share/neo/2009-05-29/home/lindi/.bash_history:chown root.dbus /usr/lib/dbus-1.0/dbus-daemon-launch-helper
/home/share/neo/2009-05-29/home/lindi/.bash_history:chown root:dbus /usr/lib/dbus-1.0/dbus-daemon-launch-helper
/home/share/neo/2009-05-29/home/lindi/.bash_history:chown root:messagebus /usr/lib/dbus-1.0/dbus-daemon-launch-helper
/home/share/neo/2009-05-29/home/lindi/.bash_history:chmod u+s /usr/lib/dbus-1.0/dbus-daemon-launch-helper
/home/share/neo/2009-05-29/home/lindi/.bash_history:ls -l  /usr/lib/dbus-1.0/dbus-daemon-launch-helper
/home/share/neo/2009-05-29/home/lindi/.bash_history:chmod o-rx  /usr/lib/dbus-1.0/dbus-daemon-launch-helper
/home/share/neo/2009-05-29/home/lindi/.bash_history:chmod o+r  /usr/lib/dbus-1.0/dbus-daemon-launch-helper
/home/share/neo/2009-05-29/home/lindi/.bash_history:ls -l  /usr/lib/dbus-1.0/dbus-daemon-launch-helper
/home/share/neo/2009-05-29/home/lindi/.bash_history:dpkg -L /usr/lib/dbus-1.0/dbus-daemon-launch-helper

$ grep dbus /home/share/neo/2009-05-29/var/log/dpkg.log
2009-05-27 14:15:02 upgrade libdbus-1-dev 1.2.12-1 1.2.14-2
2009-05-27 14:15:02 status half-configured libdbus-1-dev 1.2.12-1
2009-05-27 14:15:03 status unpacked libdbus-1-dev 1.2.12-1
2009-05-27 14:15:03 status half-installed libdbus-1-dev 1.2.12-1
2009-05-27 14:15:05 status half-installed libdbus-1-dev 1.2.12-1
2009-05-27 14:15:08 status unpacked libdbus-1-dev 1.2.14-2
2009-05-27 14:15:08 status unpacked libdbus-1-dev 1.2.14-2
2009-05-27 14:15:09 upgrade libdbus-1-3 1.2.12-1 1.2.14-2
2009-05-27 14:15:09 status half-configured libdbus-1-3 1.2.12-1
2009-05-27 14:15:09 status unpacked libdbus-1-3 1.2.12-1
2009-05-27 14:15:10 status half-installed libdbus-1-3 1.2.12-1
2009-05-27 14:15:10 status half-installed libdbus-1-3 1.2.12-1
2009-05-27 14:15:12 status unpacked libdbus-1-3 1.2.14-2
2009-05-27 14:15:12 status unpacked libdbus-1-3 1.2.14-2
2009-05-27 14:15:50 upgrade dbus 1.2.12-1 1.2.14-2
2009-05-27 14:15:50 status half-configured dbus 1.2.12-1
2009-05-27 14:15:51 status unpacked dbus 1.2.12-1
2009-05-27 14:15:52 status half-installed dbus 1.2.12-1
2009-05-27 14:15:53 status half-installed dbus 1.2.12-1
2009-05-27 14:15:54 status half-installed dbus 1.2.12-1
2009-05-27 14:15:55 status unpacked dbus 1.2.14-2
2009-05-27 14:15:56 status unpacked dbus 1.2.14-2
2009-05-27 14:17:06 upgrade dbus-x11 1.2.12-1 1.2.14-2
2009-05-27 14:17:06 status half-configured dbus-x11 1.2.12-1
2009-05-27 14:17:07 status unpacked dbus-x11 1.2.12-1
2009-05-27 14:17:07 status half-installed dbus-x11 1.2.12-1
2009-05-27 14:17:07 status half-installed dbus-x11 1.2.12-1
2009-05-27 14:17:08 status half-installed dbus-x11 1.2.12-1
2009-05-27 14:17:09 status unpacked dbus-x11 1.2.14-2
2009-05-27 14:17:10 status unpacked dbus-x11 1.2.14-2
2009-05-27 14:18:16 upgrade libdbus-glib-1-dev 0.80-3 0.80-4
2009-05-27 14:18:16 status half-configured libdbus-glib-1-dev 0.80-3
2009-05-27 14:18:17 status unpacked libdbus-glib-1-dev 0.80-3
2009-05-27 14:18:17 status half-installed libdbus-glib-1-dev 0.80-3
2009-05-27 14:18:18 status half-installed libdbus-glib-1-dev 0.80-3
2009-05-27 14:18:20 status unpacked libdbus-glib-1-dev 0.80-4
2009-05-27 14:18:21 status unpacked libdbus-glib-1-dev 0.80-4
2009-05-27 14:18:21 upgrade libdbus-glib-1-2 0.80-3 0.80-4
2009-05-27 14:18:21 status half-configured libdbus-glib-1-2 0.80-3
2009-05-27 14:18:22 status unpacked libdbus-glib-1-2 0.80-3
2009-05-27 14:18:22 status half-installed libdbus-glib-1-2 0.80-3
2009-05-27 14:18:23 status half-installed libdbus-glib-1-2 0.80-3
2009-05-27 14:18:26 status unpacked libdbus-glib-1-2 0.80-4
2009-05-27 14:18:26 status unpacked libdbus-glib-1-2 0.80-4
2009-05-27 14:35:11 install libqt4-dbus 4.4.3-2 4.5.1-2
2009-05-27 14:35:11 status half-installed libqt4-dbus 4.4.3-2
2009-05-27 14:35:14 status unpacked libqt4-dbus 4.5.1-2
2009-05-27 14:35:14 status unpacked libqt4-dbus 4.5.1-2
2009-05-29 01:56:29 configure libdbus-1-3 1.2.14-2 1.2.14-2
2009-05-29 01:56:29 status unpacked libdbus-1-3 1.2.14-2
2009-05-29 01:56:29 status half-configured libdbus-1-3 1.2.14-2
2009-05-29 01:56:31 status installed libdbus-1-3 1.2.14-2
2009-05-29 01:56:36 configure dbus 1.2.14-2 1.2.14-2
2009-05-29 01:56:36 status unpacked dbus 1.2.14-2
2009-05-29 01:56:37 status unpacked dbus 1.2.14-2
2009-05-29 01:56:37 status unpacked dbus 1.2.14-2
2009-05-29 01:56:38 status unpacked dbus 1.2.14-2
2009-05-29 01:56:38 status unpacked dbus 1.2.14-2
2009-05-29 01:56:39 status half-configured dbus 1.2.14-2
2009-05-29 01:57:09 status installed dbus 1.2.14-2
2009-05-29 01:58:47 configure dbus-x11 1.2.14-2 1.2.14-2
2009-05-29 01:58:47 status unpacked dbus-x11 1.2.14-2
2009-05-29 01:58:48 status unpacked dbus-x11 1.2.14-2
2009-05-29 01:58:48 status half-configured dbus-x11 1.2.14-2
2009-05-29 01:58:48 status installed dbus-x11 1.2.14-2
2009-05-29 01:59:41 configure libdbus-glib-1-2 0.80-4 0.80-4
2009-05-29 01:59:41 status unpacked libdbus-glib-1-2 0.80-4
2009-05-29 01:59:41 status half-configured libdbus-glib-1-2 0.80-4
2009-05-29 01:59:43 status installed libdbus-glib-1-2 0.80-4
2009-05-29 02:05:46 configure libdbus-1-dev 1.2.14-2 1.2.14-2
2009-05-29 02:05:46 status unpacked libdbus-1-dev 1.2.14-2
2009-05-29 02:05:47 status half-configured libdbus-1-dev 1.2.14-2
2009-05-29 02:05:47 status installed libdbus-1-dev 1.2.14-2
2009-05-29 02:05:48 configure libdbus-glib-1-dev 0.80-4 0.80-4
2009-05-29 02:05:48 status unpacked libdbus-glib-1-dev 0.80-4
2009-05-29 02:05:48 status half-configured libdbus-glib-1-dev 0.80-4
2009-05-29 02:05:48 status installed libdbus-glib-1-dev 0.80-4
2009-05-29 02:08:22 configure libqt4-dbus 4.5.1-2 4.5.1-2
2009-05-29 02:08:22 status unpacked libqt4-dbus 4.5.1-2
2009-05-29 02:08:23 status half-configured libqt4-dbus 4.5.1-2
2009-05-29 02:08:25 status installed libqt4-dbus 4.5.1-2

I'm happy to provide more information including complete root
filesystem tarballs for days of interest.