Ok, I am usually very careful when using the word "bug." It seems that anytime anything goes wrong, it is a "bug." Well, I think I may have found a real one. If you take a look at the industry chart at anytime in the game, you can see your civ's industry go up (or down). Whenever you save a game (I use quicksave), and reload, you get a big negative spike in the chart for one turn. After that, the chart goes back to normal. Basically, I can use this spike to let me know just how long I have been playing or how many turns I have taken since my last reload. It doesn't affect gameplay, but it does look a little strange.