Description of problem:
   anaconda presents an exception report trying to display the final screen of
the installation process.  It looks like somebody missed an arch-specific call
in the recent fixes.  All install processes have apparently completed (including
installing GRUB) and the resulting system boots just fine.  (At last, a
non-fatal anaconda exception!)

Version-Release number of selected component (if applicable):
   anaconda-11.4.1.4

How reproducible:
   consistently

Steps to Reproduce:
1. install
2. do everything
3. watch it happen at the end
  
Actual results:
   exception - report attached

Expected results:
   no exception - display "Congratulations" screen

Additional info: