displayconfig-gtk not functional

After installing a second video card ( S3 Inc. ViRGE/DX), displayconfig-gtk does not not save my changes.

In the console, I get the following errors:

FATAL: Error inserting battery (/lib/modules/2.6.22-14-generic/kernel/drivers/acpi/battery.ko): No such device
FATAL: Error inserting battery (/lib/modules/2.6.22-14-generic/kernel/drivers/acpi/battery.ko): No such device
Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/displayconfiggtk/DisplayConfig.py", line 765, in on_treeview_screens_cursor_changed
    self.get_rates_for_current_resolution()
  File "/usr/lib/python2.5/site-packages/displayconfiggtk/DisplayConfig.py", line 874, in get_rates_for_current_resolution
    for rate in device.getAvailableRefreshRates():
  File "/var/lib/python-support/python2.5/displayconfigabstraction.py", line 2085, in getAvailableRefreshRates
    return self.getAvailableRefreshRatesForResolution(self.currentsizeindex)
  File "/var/lib/python-support/python2.5/displayconfigabstraction.py", line 2097, in getAvailableRefreshRatesForResolution
    isize = self.available_sizes[resolution_index]
IndexError: list index out of range
Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/displayconfiggtk/DisplayConfig.py", line 765, in on_treeview_screens_cursor_changed
    self.get_rates_for_current_resolution()
  File "/usr/lib/python2.5/site-packages/displayconfiggtk/DisplayConfig.py", line 874, in get_rates_for_current_resolution
    for rate in device.getAvailableRefreshRates():
  File "/var/lib/python-support/python2.5/displayconfigabstraction.py", line 2085, in getAvailableRefreshRates
    return self.getAvailableRefreshRatesForResolution(self.currentsizeindex)
  File "/var/lib/python-support/python2.5/displayconfigabstraction.py", line 2097, in getAvailableRefreshRatesForResolution
    isize = self.available_sizes[resolution_index]
IndexError: list index out of range

Furthermore, Screen 1 is listed twice (but I can't do anything at all when I've selected that item.