Has anyone experienced this? Last night, I was finishing up a game with the Russians, well on my way to a Space Race victory (that's getting turned off next time), when suddenly, the game kept making me create power plants. I would create both solar plants and nuclear plants in a city, and when the second plant was finished, it would prompt me to create the first plant again. At first, I thought I was mistaken, but then it kept happening in all of my high production cities. In addition, it wouldn't let me create the components of my ship!! Only one city had the ability to create them, and for the other cities, I kept switching back and forth between the plants! ARGH! Eventually, the Americans completed their ship and I suffered a humiliating loss, despite my culture being more than twice as large as the next closest civ. Ugh. 
