User names in FC2

[Brad Smith]

> are you absolutely certain about this? (periods in usernames)
> 
> Craig

This is an issue with useradd. If you manually add a user with periods
in the name it is valid.

The issue is in bugzilla here:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=115383

and here:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=115383

It appears that a fix has been provided and will be available soon. If
you're impatient, the patch is in Bugzilla.

--Brad