Hi Guido,
Correct, the admin pages are not translated and that has to do with the construction of the complete forum.
As the forum is constructed now, all pages vissible for for the 'normal' users have variables defined, which are filled by the languagefiles.
The admin section is more 'hardcoded'; not with variables.
You *can* translate the admin section, but when there is an update you have to do (worst case) all the translationwork again.
It is a choice you have to make:
1. use the language packs as it is now, and when there are updates, do the upgrade with overwriting existing files in a few minutes or
2. translate the changed files first before you update, which can be timeconsuming and fault-sensitive
(I prefer the 1st)
Groetjes,