MS Visio refused to run in anything other than English on a PC I used because Windows was set to a specific flavor of German which Visio didn't have in its language list. As far as I could tell there was no way to change the program's language other than changing the OS language and reinstalling Visio.
Now Firefox added stupid popups offering translating websites written in my native language because the OS is set to English. And they didn't see a need to create a checkbox for that outside of about:config (Mozilla, if you want to get rid of me you can just say so instead of spamming me with popups)
