I set up an account of Windows 8 for my girl friend only to come to the shocking conclusion that it thinks its from Japan (or well somewhere strange):
I noticed she had filled in Swaziland as her location on her Windows Live profile, but I don't recall them speaking Japanese there.
Meanwhile my account seems unaffected and even a local (non-Live) account seemed affected. So far I couldn't find the right setting that would let me change the language of the UI itself.
Any suggestions?