p.s. Re save patterns, I strongly recommend *against* making your autosave every turn. If you set it to something larger, say 10-15 turns, *and* remember that CTRL+S is your friend, then the quick save is your immediate ditch option and the autosave gives you some time to figure out that something really, really bad happened.
End of GW's quote
On the "lower" difficulty settings (Tough and below; possibly up to sub-Maso but I doubt it), the AI will, without fail, redesign its ships every 10 turns. It also happens to re-evalaute its military standing with regards to everyone else's, once again, every 10 turns. What this means is your chance to have war declared on you is much, much higher on every tenth turn than it is at any other turn. I have noticed this particularly with the Drengin-once in a great while they'll declare war on me on a x/10+3 turn or an x/10+5 turn, but most of the time it's directly on an x/10 turn.
Note: The maximal difficulty I've played consistently is Tough, as I had issues with the idea of the player receiving a hidden research bonus beyond those levels. Although I've since become much more relaxed in my stance towards it, I have not yet had the spare time to get in games of that magnitude-or even my normal difficulty of Tough.
The point I'm trying to make here is that you don't want to set your autosaves to either 10 or 15 turns. While it's obvious that at some point your autosaves will line up with an AI's decision-making turn (for lack of a better way to put it), I've found that 9 works a lot better than 10.
This is particularly helpful when the Altarians declare war on your ally and then your ally asks you to get your ass kicked by the entire rest of the galaxy. It doesn't happen often, but at the same time, it happens too often, if you know what I mean.
That said, quicksaves are definitely your friend.