[SOLVED] Display settings lost with each reboot

I have just installed Mageia 3 and am learning my way around. I have an Nvidia card and two monitors. On boot both monitors come up and are the reverse of what I want. Namely, the right monitor is primary and the mouse needs to be moved from right to leftt to move it accross the screens. However I like to work on the left screen and if needed slide my mouse from the left to the right-sided screen. As the right-sided screen is by default the primary one, then the mouse cannot go right side to left.
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
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