I was really happy to find your guide for the current version of linux but I also have the same issue as iain1234. From what I have read gnome-fallback.desktop now requires accelerated graphics, or is broken, and defaults to gnome3 somehow. So if there no fix in the near future, I have seen some installing xfce4 with no issues.
I am very much a newbie to linux, thats why I was happy to find your complete guide. My question is, if I want a graphical interface with VNC now, how do I uninstall gnome? Then install xfce4. It seemed to have installed many dependencies. Or if you have it working what other tips may I try to get mine working. I've tried mnrbig solution but didn't work for me.
Thanks for all your work on this site.