On login after a restart, got a crash after installing kubuntu-desktop, as well as the MATE desktop packages. Suggested string was: package kaccounts-providers (not installed) failed to install/upgrade: trying to overwrite '/etc/signon-ui/webkit-options.d/www.facebook.com.conf', which is also in package account-plugin-facebook 0.12+16.04.20160126-0ubuntu1

It might just be me that's retarded and installed something in a way I shouldn't have.
I'm using the standard login-thingie. (lightdm or something?)

Requested information:

haakon@haabuntu:~$ lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04

haakon@haabuntu:~$ apt-cache policy kubuntu-desktop mate-desktop
kubuntu-desktop:
  Installed: 1.338
  Candidate: 1.338
  Version table:
 *** 1.338 500
        500 http://no.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
        100 /var/lib/dpkg/statushaakon@haabuntu:~$ apt-cache policy kubuntu-desktop mate-desktop
kubuntu-desktop:
  Installed: 1.338
  Candidate: 1.338
  Version table:
 *** 1.338 500
        500 http://no.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
        100 /var/lib/dpkg/status
mate-desktop:
  Installed: 1.12.1-1
  Candidate: 1.12.1-1
  Version table:
 *** 1.12.1-1 500
        500 http://no.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
        100 /var/lib/dpkg/status

mate-desktop:
  Installed: 1.12.1-1
  Candidate: 1.12.1-1
  Version table:
 *** 1.12.1-1 500
        500 http://no.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: kaccounts-providers (not installed)
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Sun Aug 28 12:00:39 2016
DuplicateSignature:
 package:kaccounts-providers:(not installed)
 Unpacking kde-config-telepathy-accounts (4:15.12.3-0ubuntu1) ...
 dpkg: error processing archive /var/cache/apt/archives/kde-config-telepathy-accounts_4%3a15.12.3-0ubuntu1_amd64.deb (--unpack):
  trying to overwrite '/usr/share/accounts/services/google-im.service', which is also in package account-plugin-google 0.12+16.04.20160126-0ubuntu1
ErrorMessage: trying to overwrite '/etc/signon-ui/webkit-options.d/www.facebook.com.conf', which is also in package account-plugin-facebook 0.12+16.04.20160126-0ubuntu1
InstallationDate: Installed on 2016-08-21 (7 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: kaccounts-providers
Title: package kaccounts-providers (not installed) failed to install/upgrade: trying to overwrite '/etc/signon-ui/webkit-options.d/www.facebook.com.conf', which is also in package account-plugin-facebook 0.12+16.04.20160126-0ubuntu1
UpgradeStatus: No upgrade log present (probably fresh install)