I am natively German. I started using a German Version of Delphi 3 as my first real programming IDE. I switched to an English Version of Delphi 4 when it was released, and since then, I NEVER looked back, and I NEVER had the desire to use a German version ever again. When MSDN.com comes up in German, I switch to English. Why? Because translation are just that: Translations. They are not the Real thing. It’s called Exception, not Ausnahme. If my code says Exception then the error message should say Exception as well. If my Code says Exception and the error message talks about Ausnahme, I have to make an extra thought-step in order to associate them - easy with Exception/Ausnahme, but really hard in some other areas.
Plus, because English is spoken by so many people, the community and resources are simply bigger. You can bash Americans/British if you like, but it’s a fact that English is by far the most spoken language in the world. Limiting myself to the German Community would be a stupid move in my opinion, because it’s like using only 20% of your PC’s RAM before starting swapping.
For people who do not really speak English, localized Communities are of course fine, I don’t want to bash them, but I think that if you really want to connect to all the community, English is the way to go.
Any if someone wants to change that - feel free to do so. Invent an absolute must-have programming language in your native tongue. Just keep in mind that Delphi is an English Product, Visual Studio is English, Mac OS X is English, Windows is English - with only very few exceptions, ALL the important programs are natively English and then translated, and translations are never 100%, especially not if you leave the Syntax unchanged in english. There is one example, which is WinDev. To my knowledge, they have a French translation that really translated EVERYTHING into French, including the language itself, and it seems to be quite big over here in France.
But unless 99.99% of my working environment is natively English, I refuse to use a translated version of any development tools, because that would mean I seriously limit my resources.