SE5 map generator not so random?

[Shadowstar]

I just started a new game from scratch, generated a new map and everything, and when the game starts it's the exact same map as the last game I ran, complete with player starts. The system names are different, but everything else, right down to the planet graphics and positions is exactly the same. The values of the asteroid fields in my system are even the exact same.

Now, either that was one hell of a coincidence or SE5's map generator isn't quite so random after all. Course, it's also possible that I've somehow breached the fractal code of the universe and the Earth will implode the minute I run my first turn.