http://bugs.winehq.org/show_bug.cgi?id=20377
--- Comment #7 from Charles Davis cdavis@mines.edu 2009-11-24 19:58:26 --- Created an attachment (id=24944) --> (http://bugs.winehq.org/attachment.cgi?id=24944) Patch to avoid overriding LC_MESSAGES
Try this patch. It prevents Wine from overriding LC_MESSAGES with the user's default language if LANG is set. It works for me :).