Deutsch

Every once in a while, Firefox shows me error messages (like Page Not Found) in German. I don't know why. I happen to be able to read and understand German, but what could that have to do with it? This time, Google is doing it to me:



The only reason Google shows me as signed in, is because I signed into YouTube. Yet my YouTube pages are still in English.

I bet it is related to one of my plug-ins. But why would it happen so intermittently?