I've had a similar problem. It stuck at "Configuring landscape-common" with the same messages in the terminal log.
I then killed /usr/bin/python /usr/bin/landscape-sysinfo and the upgrade continued.
Those error messages appeared several times again in the terminal window. But it never got stuck again.
I will attach the logfiles from /var/log/dist-upgrade. First apt.log.
I've had a similar problem. It stuck at "Configuring landscape-common" with the same messages in the terminal log.
I then killed /usr/bin/python /usr/bin/ landscape- sysinfo and the upgrade continued.
Those error messages appeared several times again in the terminal window. But it never got stuck again.
I will attach the logfiles from /var/log/ dist-upgrade. First apt.log.