I suggest to obsolete the 4.6.4 versions of task-kde4 task-kde4-minimal task-kde4-debug as to match the new package fragmentation of KDE 4.6.90. (Just removing them orphans packages, and unorphaning them is annoying.)
I am already cursing the whole KDE f*ing team for the new fragmentation, because this affects *all* the packages that have BuildRequires: kdegraphics4-devel and I still don't know what the correct BuildRequires would be under 4.6.90. (I am impatiently waiting for Win8, maybe this would alleviate my pains with Linux.) R-C aka beranger
