Failed to reproduce on Ubuntu 10.04.4 using a fresh cloud image. "apt-get install mailman" completed successfully. I specified English (only) in response to the debconf prompt, and my /var/lib/mailman/Mailman/mm_cfg.py now contains DEFAULT_SERVER_LANGUAGE = 'en'.
Failed to reproduce on Ubuntu 10.04.4 using a fresh cloud image. "apt-get install mailman" completed successfully. I specified English (only) in response to the debconf prompt, and my /var/lib/ mailman/ Mailman/ mm_cfg. py now contains DEFAULT_ SERVER_ LANGUAGE = 'en'.