I've tried installing version 12.10 and the current beta.
The instructions provided in the link correct as long as you don't run into issues. The problem comes when it needs to compile, thern it finds GCC but not the headers even though I can confirm they are installed under /use/src.
Going to install Ubuntu server tonight to see if I run into the same issues.
I've done this before in the last version of Fusion and recall it worked fine. I even managed to install it on my vsphere server at work.
Thanks.