I prefer a well-working p2p over my local language... actually, I mostly use the English version of most software, because the translations aren't always that good (and I know its difficult to translate alot English terms, so I don't blame anyone).
I'm Dutch, but always installed the English versions of windows and now KDE... I only want to have Dutch spellchecking - which is wonderfull in kde (3.2 CVS, even this message is spell-checked!)