Installing xserver-xorg-core and xserver-common from maverick-proposed resolved this issue for me.
x86_64 Four monitors, two rotated, Xinerama.
xorg 1:7.5+6ubuntu3 xserver-common 2:1.9.0-0ubuntu7.1 xserver-xorg 1:7.5+6ubuntu3 xserver-xorg-core 2:1.9.0-0ubuntu7.1
Thanks!
Installing xserver-xorg-core and xserver-common from maverick-proposed resolved this issue for me.
x86_64
Four monitors, two rotated, Xinerama.
xorg 1:7.5+6ubuntu3
xserver-common 2:1.9.0-0ubuntu7.1
xserver-xorg 1:7.5+6ubuntu3
xserver-xorg-core 2:1.9.0-0ubuntu7.1
Thanks!