Obtained the following traceback. What I did was:
Enter root password.
Add a non-root user.
Noticed that I mistyped the user name.
Clicked on the username in the list box, to repopulate entry fields with
Edited the username field.
Hit 'Enter' until my change was reflected in the userlist box.
Hit 'Next', to go to the next screen.
Created attachment 8860 [details]
This defect is considered MUST-FIX for Florence Release-Candidate #1
Verified this bug. I'm working on it.
Fixed in cvs. Brock, please verify.
verified fix in qa0217.1 ...