Interesting that you mention that. The system behaves as if there are not any language packs installed, although I know I installed a group of language packs a long time ago for testing purposes (we develop language teaching software). Looking at the "Uninstall Langauges" window, it has listed Arabic, Chinese, Chinese (Simple), Hebrew, Japanese, Korean, and Thai but they do not appear to be selectable as input methods or displays. I have not tried uninstalling them or re-installing them as I have not had any need for any of them lately.
Richard