I installed gnome from a kubuntu 11.04 installation using apt-get
$ apt-get install gnome-desktop-environment
Everything was working just fine until I decided to change the panel format. Then a tried to fix it following both those instructions, with no success:
Nothing is working inside Gnome now, not even ALT+F2 I tried to uninstall and install it again, and I tried to install Unity too.
Any ideas in how to solve this issue?