I went back to the create user screen because of bug 734906 (ntp missing) and then I had some trouble figuring out how to go forward again. It was unclear if it would create a copy of the same user or just replace it. I suppose it's a good way to create multiple users at first boot if you want to, but if that step has already been done, it would be good to have a way to go forward without creating it again.
When you went back to the create user screen, were the text fields prefilled with the old values. or were they empty?
Yes, they all still had the same values.
firstboot-16.4-1.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/firstboot-16.4-1.fc16
Package firstboot-16.4-1.fc16: * should fix your issue, * was pushed to the Fedora 16 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing firstboot-16.4-1.fc16' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/firstboot-16.4-1.fc16 then log in and leave karma (feedback).
firstboot-16.4-1.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.