[F9] radeon dual-head display w/Xinerama

[Sean Bruno]

Recently updated from F8 to F9 on my box and ran into a very odd issue
with my Radeon:

(lspci)
01:00.0 VGA compatible controller: ATI Technologies Inc RV370 5B60
[Radeon X300 (PCIE)]
01:00.1 Display controller: ATI Technologies Inc RV370 [Radeon X300SE]

I attempted to use, more or less, the same xorg.conf configuration with
Xinerama that worked on F8 and it was partially successful.

The desktop area for each monitor, is somehow exceeding the displayable
area(I have to move the mouse to the edge of the monitor to make the
desktop scroll over to the rest of the desktop).  This only shows up in
a dual head configuration.  If I simply comment out the second display,
my primary display is sized correctly and all is well.  

Both Monitors are Dell 1901FP's and worked fine under F8.

xorg.conf --> http://fpaste.org/paste/4916

Help?

Sean