I made an automatic update on my Ubuntu 13.10 (from 13.04) system today. Since this point of time, I am in really big trouble. I use a VNC server with Gnome classic, after the update my Gnome was gone. So i tried everything. Checked the xstartup file of vncserver.

Right now I reached a point where I can't find the answer. The logfile says that gnome-session-fallback is missing, even directly after I installed it with apt-get (tried it serveral times, installing, uninstalling and so on).

I have no chance to use it as you can see in this terminal copy:

root@ip-xxx:~/.vnc# apt-get install gnome-session-fallback
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  gnome-session-fallback
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/2,914 B of archives.
After this operation, 247 kB of additional disk space will be used.
Selecting previously unselected package gnome-session-fallback.
(Reading database ... 210977 files and directories currently installed.)
Unpacking gnome-session-fallback (from .../gnome-session-fallback_1%3a3.6.2-0ubuntu15_all.deb) ...
Setting up gnome-session-fallback (1:3.6.2-0ubuntu15) ...

root@ip-xxx:~/.vnc# gnome-session-fallback
The program 'gnome-session-fallback' is currently not installed. You can install it by typing:
apt-get install gnome-session-fallback

If you have some idea, please give me a hint...

Thank you!