Comment #8 suggested that the login cursor freeze could be avoided by removing gnome-software-service.desktop from autostart by renaming the entry in /etc/xdg/autostart
I have done this and now my unity and gnome-flashback logons are all logging in successfully.
On my system this bug appears to be a gnome-software bug.
Investigating a cursor freeze problem in the new Software application, I found the following bug:
https:/ /bugs.launchpad .net/ubuntu/ +source/ gnome-software/ +bug/1578317
Comment #8 suggested that the login cursor freeze could be avoided by removing gnome-software- service. desktop from autostart by renaming the entry in /etc/xdg/autostart
I have done this and now my unity and gnome-flashback logons are all logging in successfully.
On my system this bug appears to be a gnome-software bug.