Preparing to unpack .../nautilus-sendto_3.8.2-1ubuntu1_amd64.deb ...
Unpacking nautilus-sendto (3.8.2-1ubuntu1) over (3.6.1-2ubuntu1) ...
Preparing to unpack .../network-manager-pptp-gnome_1.1.93-1ubuntu1_amd64.deb ...
Unpacking network-manager-pptp-gnome (1.1.93-1ubuntu1) over (0.9.8.2-1ubuntu2) ...
Preparing to unpack .../network-manager-pptp_1.1.93-1ubuntu1_amd64.deb ...
Unpacking network-manager-pptp (1.1.93-1ubuntu1) over (0.9.8.2-1ubuntu2) ...
dpkg: considering deconfiguration of network-manager, which would be broken by installation of ppp ...
dpkg: yes, will deconfigure network-manager (broken by ppp)
Preparing to unpack .../ppp_2.4.7-1+2ubuntu1_amd64.deb ...
De-configuring network-manager (0.9.8.8-0ubuntu7.3) ...
update-rc.d: /etc/init.d/pppd-dns exists during rc.d purge (use -f to force)
dpkg: error processing archive /var/cache/apt/archives/ppp_2.4.7-1+2ubuntu1_amd64.deb (--unpack):
 subprocess new pre-installation script returned error exit status 1