Comment 57 for bug 1560797

I think I got this bug. I upgraded to 16.04 because my update manager proposed that I do so.
I first had a message that I should choose between lightdm and gdm3. I chose the default: lightdm.
Then systemd failed to install, then (I don't know in what order)
systemd-sysv
lidpam-systemd
gvfs-daemons
gvfs
gvfs-backends
udisk2
nautilus
gvfs-fuse
policy-kit-1
ubuntu-system-service
gnome-settings-daemon
colord
gnome-control-center
gnome-bluetooth
pulseaudio
indicator-sound
unity-control-center

By then, I feared that my installation was lost. I got a zillion more errors.

At the end, I got a message that I might have a none-working system. So, instead of restarting, I did what some internet pages suggested:
run the following in a terminal (and do what seems logical to do):
apt-get -f install
apt-get update
apt-get upgrade
(I think I repeated the series a few times, until no warnings were given anymore and all the work was done)
Then I crossed my fingers and restarted,... and got a welcome screen and could login.
This, however, was followed by some error messages and a dialogue which led me to this page, ultimately.

So, I think my system works (despite all), but I'm not sure.