Comment 1 for bug 764820

It's a conflict between kdevelop-data and kdevelop-l10n-de (which does not exist anymore for kdevelop 4.2.x) .
I don't find any kdevelop-l10n-de_4:4.1.2-0ubuntu1~maverick1~ppa1 in kubuntu/backports...

Could you give the output of the following command: apt-cache showpkg kdevelop-l10n-de ?
thanks