On a Drupal 7.1 installation with several languages ("/admin/config/regional/language"), the editor provided by the CKEditor 7.x-1.1 module does not follow the user language (which can be setup by the user via "/user").
The editor still uses english only for the icons captions.
CKEditor in configured via "/admin/config/content/ckeditor/edit/Full", and the setup done is :
- Language : English
- Auto-detect language : Enabled