Who sets default locale environment?

["Pedro Sanchez" <psanchez@nortelnetworks.com>]

After installing a new Potato machine I get the following:

$locale
LANG=(null)
LC_CTYPE="(null)"
LC_NUMERIC="(null)"
LC_TIME="(null)"
LC_COLLATE="(null)"
LC_MONETARY="(null)"
LC_MESSAGES="(null)"
LC_ALL=

Aren't there supposed to be any defaults there?

--
Pedro