http://bugs.winehq.org/show_bug.cgi?id=9726
--- Comment #47 from Dmitry Timoshkov dmitry@codeweavers.com 2007-09-26 01:46:25 --- Just a notice:
If this is a 64-bit configuration specific problem, then the fact that Wine is a 32-bit application but 'locale' is a 64-bit one may explain the discrepancy.
At some point I had to manually add a /usr/lib32/locale symlink pointing to /usr/lib/locale in my Ubuntu 7.04 64-bit to make locales work in Wine.