Change all languages in "Change Display Language" menu. Reboot is required twice.
http://snoopy-textcube.blogspot.kr/2009/05/%EC%9C%88%EB%8F%84%EC%9A%B0-7-%EC%98%81%EB%AC%B8%ED%8C%90-%EC%84%A4%EC%B9%98%EC%8B%9C-%EC%A3%BC%EC%9D%98%EC%82%AC%ED%95%AD.html