Ok, I translated it:
Attachment de_DE-20100712.txt not found
Hope everything is ok so, because sometimes a translation is not that easy if you don\'t know the context. If I find better translations while using the AUser Manager I will send you some update.
Another thing is the translation of the mathematic captcha:
In German bigger numbers are not generated like in English, so 42 is NOT fourty-two, BUT twoandfourty. The english construction directly translated reads very confusing, especially because of the seperator \'-\' wich I intuitively interpreted as minus...