python-qt4 declares a breaks on python-kde4 (<= 4:4.6.80-3+b1) due to
old builds being incompatible with new versions of python-qt4.
This is fine on most architectures but armhf and s390x still have
non-binnmu versions of python-kde4. Can you binnmu the package with a
+b2 version suffix on those architectures to bring it's binnmu suffix
into sync with other architectures.