Best I can determine is that it's an XP problem. I have it too and have tried everything I can think of unsuccessfully to fix it. I turned off ship movement and use the "movement lines" option instead and this is a pretty good work around. There have been previous threads about this problem, but nothing has fixed it for me.
I have XP and don't have problems. Although I only play simultaneous turn games so the ships aren't supposed to move anyway. Can someone describe in more detail what is happening and when? I will try it out and see if I can duplicate it.
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