Description of problem:
On fedora-8 using: gnome-panel-2.20.3-1.fc8.x86_64 it was possible, and very
useful, to set up separated panels on each screen of an NVidia twinview setup.

In rawhide now, panels extend across both panels with no opportunity to leave
one screen completely clear of desktop stuff.

This is a regression with a loss of useful funtionality.

Version-Release number of selected component (if applicable):
gnome-panel-2.23.5-1.fc10.x86_64

How reproducible:
100%


Steps to Reproduce:
1.twin screen ssetup using NVidia twinview
2.login with gnome desktop
3.
  
Actual results:
Panels extend across both screens

Expected results:
Each panel should be contsrained to a single screen, as in fedora-8

Additional info: