During the most recent update of 2016-05-08 I lost Internet connectivity during the update and got a tooltip message saying the network-manager-xxx could not be found.
After failed attempts at trying to resume the update, I found that
top gave me 100% CPU usage for NetworkManager.
I then tried reviving the update from the NRR 2016-01 live USB image and when that failed, I did a re-installation from scratch. This cost me time and effort as I needed to re-visit all the customizations and additional packages I had installed. The most time-consuming of all was the actual upgrade process from the NRR 2016-01 version to the latest.
Is there any way I can make a system backup of my current packages so that I need not install from a standard image like NRR 2016-01 with its multi-stage updates in the event of a dysfunctional system? This will allow me to restore my system far more easily and quickly.