Ok, I made the "big step" and I upgraded from Ubuntu 13.04 to 14.04 directly through /etc/apt/sources.list file. Big upgrade procedure here as I have too many packages in this installation (dev packages and 5 different DEs= Unity,GNOME,Lubuntu-desktop,Cairo-Dock,KDE).
Here is a log file for anyone who wants to see →
http://pastebin.com/raw.php?i=kakRAier
Now, the only significant problem here is the Dash from Unity DE. Does not contain any lenses and the search function doesn't work , neither local or Web.
What I have tried is
1) Reset Unity(with the known commands) and revert to original configuration settings with
Code:
rm -rf .compiz* .gconf* .config/dconf/ .config/compiz*
2) Reinstall unity and related unity-lens packages.
Do you have any other suggestions ?
Tip that might help, during the upgrade I had multiple questions about several configuration files , but I selected the default option which is N(o), that is, "do not replace the config file with the newer one, but keep the old".