Transmission

Let's perhaps be a bit slower here.

Localisations are not trivial to get right. And rushing them through will give bad results, particularly for a non-trivial project like Transmission. I am happy do do some localisation, but I am not willing to clean up after other people's mistakes.

What I can ...

I suggest you to read the Wiki page mentioned above, then download and install Xcode so you can play around and learn how to use it to translate according to the wiki.
Joinning the IRC channel can also help with questions and other things - not to mention I think it's also a nice way to contact ...

Yep, an official german translation would be cool.

I would help to translate the Mac Version of Transmission into German too, but only if the Dev Team would like to have one.

(I don't have any experience with translating transmission, but http://trac.transmissionbt.com/wiki/Translating should help ...