Unity Dash and Sidboard gone after package upgrade

[Detlef Brendle]

Hi,
Im working with Ubuntu 14.04 and have done a normal software upgrade yesterday. With that my Unity seems to be broken.
After rebooting the X Session appears without window decoration and without the Unity Dash, Sidebar and Top Bar.

I could not see what is wrong on my machine.
I also tried to delete the '~/.config' folder but without success.
Some settings seems to be corrupt but I cannot find what.

Im running Ubuntu 14.04 on a Dell M3800.

Unity package version is:

unity:
  Installiert: 7.2.0+14.04.20140423-0ubuntu1.2
  Installationskandidat: 7.2.0+14.04.20140423-0ubuntu1.2
  Versionstabelle:
 *** 7.2.0+14.04.20140423-0ubuntu1.2 0
        500 http://ch.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
        100 /var/lib/dpkg/status
     7.2.0+14.04.20140416-0ubuntu1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.