Comment 9 for bug 1488909

This only relocates the problem to the next upcoming conflict:

# LANG=C dpkg -i /var/cache/apt/archives/kaccounts-providers_4%3a15.08.2-0ubuntu1_all.deb
(Reading database ... 319061 files and directories currently installed.)
Preparing to unpack .../kaccounts-providers_4%3a15.08.2-0ubuntu1_all.deb ...
Unpacking kaccounts-providers (4:15.08.2-0ubuntu1) ...
dpkg: error processing archive /var/cache/apt/archives/kaccounts-providers_4%3a15.08.2-0ubuntu1_all.deb (--install):
 trying to overwrite '/etc/signon-ui/webkit-options.d/www.facebook.com.conf', which is also in package account-plugin-facebook 0.12+15.10.20150723-0ubuntu1
Errors were encountered while processing:
 /var/cache/apt/archives/kaccounts-providers_4%3a15.08.2-0ubuntu1_all.deb

For me, this does not only prevent a successful installation of KDE, it leaves me with a blank (actually non-working plasma-something) screen upon reboot. Keep in mind that not all users are able to recover their system via a terminal; for the less familiar this means they have to reinstall their system.