This bug was fixed in the package user-setup - 1.26ubuntu2
--------------- user-setup (1.26ubuntu2) karmic; urgency=low
* Allow underscores in usernames, matching change in adduser 3.110ubuntu3 (LP: #388822).
-- Colin Watson <email address hidden> Thu, 18 Jun 2009 12:13:54 +0100
This bug was fixed in the package user-setup - 1.26ubuntu2
---------------
user-setup (1.26ubuntu2) karmic; urgency=low
* Allow underscores in usernames, matching change in adduser 3.110ubuntu3
(LP: #388822).
-- Colin Watson <email address hidden> Thu, 18 Jun 2009 12:13:54 +0100