Description of problem:
When logging in on VT, the following warnings appears:
-bash: warning: setlocale: LC_CTYPE: cannot change locale (ja_JP.UTF-8): No such file or directory
-bash: warning: setlocale: LC_COLLATE: cannot change locale (ja_JP.UTF-8): No such file or directory
-bash: warning: setlocale: LC_MESSAGES: cannot change locale (ja_JP.UTF-8): No such file or directory
-bash: warning: setlocale: LC_NUMERIC: cannot change locale (ja_JP.UTF-8): No such file or directory
-bash: warning: setlocale: LC_TIME: cannot change locale (ja_JP.UTF-8): No such file or directory

This was introduced by executing unset LC_* in /etc/profile.d/lang.sh. this is easy to reproduce if do "unset LC_CTYPE" on the shell say.

Version-Release number of selected component (if applicable):
bash-4.2.10-4.fc16.x86_64

How reproducible:
always

Steps to Reproduce:
1.login on VT
2.
3.
  
Actual results:
the above warnings appears

Expected results:
shouldn't appears

Additional info:
What locale one use seems not matter. changing the locale in /etc/sysconfig/i18n to LANG=en_US.UTF-8 and logout say, I still see similar warnings but for en_US.UTF-8, not for ja_JP.UTF-8 then.