Fedora 18 Refuses to use Zaphod Heads

I am trying to configure an installation of Fedora 18 to use Zaphod Heads to provide a proper dual monitor experince. I copied over the xorg.conf file that worked on Fedora 17 to /etc/X11 on the new installation and while it does indeed seem to take the file (it recognizes my option for enabling Crtl-Alt-Backspace again) it does not follow it's screen recomdations. All I get is one mirrored screen, or if I use xrander I can get one stretched screen, but not the two seperate X screens that the xorg.conf is supposed to enforce.

I have tried to configure this on one Fedora 18 setup using Xfce as well as both the Xfce and LXDE live media, and each time I have gotten the same result - mirrored heads. I need this to work as it is vital to allowing me to have proper dual head as well as gaming, as I have elaborated on in a previous thread:
http://forums.fedoraforum.org/archiv.../t-269810.html

So any suggestions as to why Fedora is suddenly not taking my X configuration seriously?

---------- Post added at 07:54 PM ---------- Previous post was at 07:32 PM ----------

Looking at my Xorg.0.log entry may have revealed something to me.

So far so good:
Then things get a little odd:


---------- Post added 9th February 2013 at 02:46 AM ---------- Previous post was 8th February 2013 at 07:54 PM ----------

So I have modified my xorg.conf file and now I am not getting those messages in my log. It now is also using a stretched screen setup rather than the zaphod heads prescribed, and it is not using the display resolutions specified nor is it using the proper primary monitor.