I've got the public front end enabled with the internal CAPTCHA service.
The language string "Security Code" ( fpr PMS from public users) remains in English when I change the site language. All the other uddeIM language changes correctly.
I thought I'd just need to add another line to the language file so I checked in the administrator/components/com_uddeim/language_utf8/english.php
and
administrator/components/com_uddeim/language_utf8/english.php
files but I couldn't find the variable there either !