configuring X - separate sessions on dual monitors

[Elwood Blues]

I recently upgraded to FC14. In FC10 I was able to have a separate X session on each of my two monitors. In FC14 I have one X session that's stretched over both of them. I'd like to go back to having two sessions, one on each monitor.

I generated an xorg.conf file and then added in the Monitor1, Screen1, Card1 sections and the Scren 1 bit under Server Layout. Looking at my FC10 xorg.conf this should work but it's not. There's probably some setting I'm not overriding in the file, can someone offer any suggestions?

Section "ServerLayout"
	Identifier     "X.org Configured"
	Screen      0  "Screen0" 0 0
	Screen      1  "Screen1" LeftOf "Screen0"
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
	ModulePath   "/usr/lib/xorg/modules"
	FontPath     "catalogue:/etc/X11/fontpath.d"
	FontPath     "built-ins"
EndSection

Section "Module"
	Load  "glx"
	Load  "dri2"
	Load  "extmod"
	Load  "dbe"
	Load  "dri"
	Load  "record"
EndSection

Section "InputDevice"
	Identifier  "Keyboard0"
	Driver      "kbd"
EndSection

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "auto"
	Option	    "Device" "/dev/input/mice"
	Option	    "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "DEL"
	ModelName    "DELL 1908FP"
	HorizSync    31.0 - 83.0
	VertRefresh  56.0 - 76.0
	Option	    "DPMS"
EndSection

Section "Monitor"
	Identifier   "Monitor1"
	VendorName   "DEL"
	ModelName    "DELL 1908FP"
	HorizSync    31.0 - 83.0
	VertRefresh  56.0 - 76.0
	Option	    "DPMS"
EndSection

Section "Device"
	Identifier  "Card0"
	Driver      "radeon"
	BusID       "PCI:1:0:0"
	Screen	0
EndSection

Section "Device"
	Identifier  "Card1"
	Driver      "radeon"
	BusID       "PCI:1:0:0"
	Screen	1
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	Monitor    "Monitor0"
	SubSection "Display"
		Viewport   0 0
		Depth     1
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     4
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     8
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     15
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     16
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection

Section "Screen"
	Identifier "Screen1"
	Device     "Card1"
	Monitor    "Monitor1"
	SubSection "Display"
		Viewport   0 0
		Depth     1
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     4
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     8
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     15
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     16
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection