I've been playing GalCiv2 for a while now, and the only problems I'd experienced were:

a. After playing for a while I get the dualcore problems.
b. Once I load a game and start playing, I can't load a game again without crashing GalCiv2.

However, as I was playing today I encountered another problem. I had been playing on a gigantic map for a couple hours, when all the sudden on one turn, I couldn't use the Speak To button in the Diplomacy menu. I hit escape but the main menu didn't come up, so I tried clicking the button for the main menu in the top left, but still nothing. I sent a transport to an enemy planet, and no invasion window came up. I can command ships, and use the turn button, and open windows such as the diplomacy and trade windows, but besides the windows that you open by clicking the bottom buttons, no other windows will open. I tried reloading my quicksave, which was just a few turns back, but after a couple of turns the problem happened again.

Has anyone else experienced this problem, and does StarDock know about it?