Comment 8 for bug 1303891

And here are the details from my VM:

# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.4 LTS"

# dpkg -l | egrep -v '^rc|^ii'
<no output; all packages are healthy>

# dpkg -l | grep upstart
ii upstart 1.5-0ubuntu7.2 event-based init daemon

# initctl version
init (upstart 1.5)

# initctl --version
initctl (upstart 1.5)

# initctl status dbus
dbus start/running, process 699

# ps ax | grep dbus-daemon | grep system
  699 ? Ss 0:00 dbus-daemon --system --fork --activation=upstart

# initctl reload dbus ; echo "exit code: $?"
exit code: 0

>>> apt-get dist-upgrade; apt-get install -f; ...

# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04 LTS"

# dpkg -l | egrep -v '^rc|^ii'
iF bluez 4.101-0ubuntu13 amd64 Bluetooth tools and daemons
iU gnome-bluetooth 3.8.2.1-0ubuntu4 amd64 GNOME Bluetooth tools
iU gnome-user-share 3.0.4-0ubuntu1 amd64 User level public file sharing via WebDAV or ObexFTP
iU indicator-bluetooth 0.0.6+14.04.20140207-0ubuntu2 amd64 System bluetooth indicator.

# dpkg -l | grep upstart
ii libupstart1:amd64 1.12.1-0ubuntu4 amd64 Upstart Client Library
ii upstart 1.12.1-0ubuntu4 amd64 event-based init daemon

# initctl version
init (upstart 1.5)

# initctl --version
initctl (upstart 1.12.1)

# initctl status dbus
dbus start/running

# ps ax | grep dbus-daemon | grep system
  699 ? Ss 0:01 dbus-daemon --system --fork --activation=upstart

# initctl reload dbus ; echo "exit code: $?"
initctl: Not running
exit code: 1

>>> The dist-upgrade/dpkg output doesn't show any irregularities regarding dbus though:
Setting up dbus (1.6.18-0ubuntu4) ...
Installing new version of config file /etc/init/dbus.conf ...
dbus start/running

Dimitri, to me it looks like as if Upstart lost track of the dbus process during the dist-upgrade.
What do you think?