blosxom is badlybroken. A careful fix for this seems to be hell of a work and rather impossible. So djpigsugguested to really break it for being able to fix it. This is a path that I never thought of have to travel as a maintainer but he seems to be right: it's the only sane way to fix this pre-release. I will announce the really broken (upgrade-wise) packages in my blog for people eager to test prior my upload. Especially I'll inform the translators of the debconf files in advance so have the update in the upload, too.