This is happening on my machine as well with Ghost 12 .It is not on a network and I am saving a drive image to a different drive connected to the same SATA controller.
If I un-tick Spanning and Autonaming (and no other options are selected), Ghost ignores it, and spans and autonames.
This might be a hint to what is happening: If I save the new settings, exit the program, and return to the program, the settings are lost. Spanning and Autonaming are ticked again.
Also, the manual says when I exit the program I should be in PE land, so I can look at or modify ghost.ini. But when I exit, the system reboots, and I don't see where that is defined.