Quite a few of us reported very very slow response loading and playing Spirits of Metropolis (Sunday's Game of the Day). I believe that both XP and Vista users were among those having problems. If it had not been such a neat game, I would have dropped it and uninstalled it. However, I contacted Vertigo Games and I've been working with them on the problem.
First, they know about the very slow load time in Vista. That was reported during beta testing. The slow responses elsewhere was not reported and they're a bit concerned and confused.
The first recommendation was to make sure I had the latest DirectX. It needs version 8 and Vista comes with 10 so that should not be a problem.
At this point, it looks like their central driver (GM7) seems to be the problem. They are checking into a way to optimize it's use in Vista. As soon as I have further information, I'll report so others (Vista AND XP) can try to resolve the response problems of this excellent game.
Even with the response problem, I'm into Constellation 2 and I've done 4 of the puzzles. I have downloaded the additional puzzle packs from the site but I have not yet installed them.
Diane