Index: user_import.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/user_import/user_import.module,v
retrieving revision 1.23
diff -u -p -r1.23 user_import.module
--- user_import.module	21 Mar 2009 22:32:42 -0000	1.23
+++ user_import.module	29 Jul 2009 21:26:02 -0000
@@ -1080,7 +1080,10 @@ function _user_import_create_username($o
     }
     
     if (empty($username)) $username = _user_import_random_username();
-    
+
+    // Remove spaces that may have pre-existed in fields.
+    if (empty($username_space)) $username = str_replace(' ', '', $username);
+
     $username = _user_import_sanitise_username($username);
     $username = _user_import_unique_username($username, TRUE);
     return $username;