The following to the issue resolved for me:
$ apt-get --reinstall install dbus
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https://bugs.launchpad.net/bugs/1278786
Title:
/etc/cron.daily/apt sends daily error about connecting
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: dbus (Ubuntu)
Status: New = Confirmed
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https://bugs.launchpad.net/bugs/1278786
Title: