I'm not sure if someone else has already posted this, but there seems to be a fairly major bug with loading saved games, in that any time you reload a saved game your planets generate 0 production and research for the first turn. It looks like that is true with everyone, since on the graph everyone's production goes to 0 for that turn. Also, when you end your turn, the date does not change. You are still allowed to move your ships, but as far as I can tell, nothing else gets done!