[TeMPOraL]

Same here. I always set everything to en_US, because that's the native language of computing. Any time I've had to use something in my native language (Polish), the translation was terrible - and the only reason I was not confused was because I could mentally untranslate the Polish text to the most likely English original.

Speaking of computing and translations: the most annoying case I've had was not with UIs, but with books. Back in the day, I bought two C++ books by Scott Meyers (Effective C++ and More Effective C++), both published in Polish, and each by a different publisher. In the first one, they translated "template" -> "szablon" and "pattern" -> "wzorzec", and in the other, they translated "template" -> "wzorzec" and "pattern" -> "szablon". Took my teenage mind quite a while to make sense of the confusion.

[phowat]

Same experience here. In college ( portuguese speaking country ), the teachers forbade us to buy translated books. We had to work with the english editions only, and I'm lucky this was the case having seen some of these translated books later.