Comment 111 for bug 1451728

I have experienced this problem as well, while adding KDE to the desktop environments on my copy of Ubuntu. As I like XFCE for most things, but decided to see how recent versions of KDE look. During installation, the KDE accounts config package kept trying to overwrite files provides by other packages. Apt-get install -f did not do it's job, and threw the same errors. I eventually just grabbed the .deb files using pkgs.org and installed them with dpkg --force-all. This resulted in all sorts of file conflicts, which as I used the --force-all option, it overrided and installed anyway. KDE seems to be working normally. If I need to, I will reinstalled the package that got overwritten, once again with the --force-all option to make sure it does it's job. However is packaging those two packages, need to decided who provides what, or move the configs off to a third package that they both could depend on instead of conflicting.