Bengali support was added in Dapper, though only in the desktop CD as the console isn't up to the necessary rendering.
** Changed in: localechooser (Ubuntu) Status: Confirmed => Fix Released -- Please include Bangla/Bengali during the installation/booting process https://launchpad.net/bugs/14845 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs