I opened the system settings, went to 'Display" and move the screens so they are in the relationship I want and set the primary screen to the appropriate side so that it all works the way I want. I then clicked on the "Save as default" button and recieved the dialog that the setting had been set as the desktop default.
Now the problem: With every reboot, the setting is lost and I have to go through the system settings again.

Bug? Something I am missing?
Appreciate any help anyone can offer.
Thanks