Thought I'd try single player again with the option to save the game and all. So I started a rather large map unlocked FFA with 5 hard AI and myself.
Very good beginning with some skirmishes with the closest two factions. I manage to raid one while keeping the other at bay and develop my empire at the same time. Then two more factions attack me through the sun from above. Fighting on four fronts is simply impossible and I lose two colonies after their defenses go down. But this is not where it ends. The fifth race merrily joins in.
Turns out ALL five AI ally with eachother and continue to systematically pound my planets until finally destroying my homeworld. They never fight eachother and the missions I manage to complete for my chosen allies to be make no difference whatsoever.
I feel like I just wasted three hours of my life. If I want to play 5 on 1 I'll be sure to check all the AI's on the same team. If I want to play a fair FFA I expect the AI's to do something else besides going all out to eliminate the human player before any other considerations.
/steaming