Thanks kharnov. It is indeed Greek I wanted to translate to.
Right now I still get an error, the same one as when the Pootle instance was broken. It reads as follows:
'Error accessing None, Filesystem sent error: Connection refused'
Sounds like a poorly-modelled database to me!
Anyway, please just send me the .po file, for editing a .po file is the method by which I was planning to translate Unvanquished regardless of the translation infrastructure available.
I shall throw in a plug for Virtaal while I'm at it, which is the best Gettext (though it can open other formats too) editor I have ever used, and would highly recommend it for any power users (or should I say, power translators!). It is brilliant, and if you are a software translator, you should at least try it.