As Geert brought to my attention, bug 1052936 (reported in 2012) may be the same as this one I recently reported in Xenial (bug 1547119): https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1547119
(see screenshot in bug description)
As Geert brought to my attention, bug 1052936 (reported in 2012) may be the same as this one I recently reported in Xenial (bug 1547119): /bugs.launchpad .net/ubuntu/ +source/ update- manager/ +bug/1547119
https:/
(see screenshot in bug description)