In your bug report, I see:
######
(EE) NVIDIA(1): The requested configuration of display devices is not
(EE) NVIDIA(1): supported in the hardware.
Fatal server error:
AddScreen/ScreenInit failed for driver 1
(II) Screen 0 shares mem & io resources
(II) Screen 1 shares mem & io resources
(WW) NVIDIA(0): WAIT (0, 6, 0x8000, 0x00000b68, 0x00000b68)
(WW) NVIDIA(0): WAIT (0, 6, 0x8000, 0x00000b8c, 0x00000b8c)
(WW) NVIDIA(0): WAIT (0, 6, 0x8000, 0x00000bb4, 0x00000bb4)
(WW) NVIDIA(0): WAIT (0, 6, 0x8000, 0x00000bc4, 0x00000bc4)
#######
I'd suggest reading here:
http://www.nvnews.net/vbulletin/showthread.php?t=58498
However, its not really clear what kind of X configuration you prefer.