Almost a year ago I moved from the Netherlands to Germany. I did not have any language problems ('System settings' > 'Console settings' > 'Language and local' set to 'English' and 'Netherlands') with my Xbox or on Xbox.com. When purchasing stuff either via Xbox.com (online) or the Marketplace (console) everything was in English.
Then the new update came (still very nice though) and that is when I started having LOCALISATION problems. Whereas purchases or the screens would partially be in English and partially in Dutch? I then changed everything on Xbox ('System settings' > 'Console settings' > 'Language and local' set to 'English' and 'United Kingdom'), as well as on Hotmail. Which is obviously complete bollocks to do, because my locale should be 'Germany'.
Now today, I was managing my account (XBOX > Profile page > 'Account Management' > 'Manage Account' > 'Your Information' > 'Billing Information'), as I wanted to upgrade my Silver (Free) back to a Gold account. As I was updating my address (via controller) and then saving ('Done') my Xbox actually had the nerve to tell me that my postal code is incorrect (doesn't match my region); even changing the 'locale' to 'Germany' did not do the trick!
As I already have problems with languages on Xbox.com (online) and the Marketplace (console), I am reluctant to set my region to 'Germany' as then probably everything will be 'German' as this influences the language.
Why can't Region be split into a both region (where you live) and spoken language (the language in which you want your legal stuff and website to be seen in)? Because now I cannot change my Billing Information, because then I will run the risk of not being able to read anything anymore?!