I installed Gnome 3.10 on Ubuntu 13.10. Just to try it. Later I decided to remove it and go beck to Unity. It took me a while to remove Gnome. After that I experience some issues:
in some apps global menu items are greyed out (all the menu item in Gimp, messaging indicator items, ...) I cannot click any of these items, but keyboard shortcut is working (for example - cannot click "Save" but CTRL+S works)
I have two network indicators in unity panel
in session menu there is a red circle in front of my username
Any ideas...???