Have you been having problems with online multiplayer for Civilization V? Firaxis is working on a fix.
This is Firaxis’ statement:
After the latest balance patch for Civ V, we received a number of reports on instability in multiplayer matches. We have a hotfix in progress that should address recent issues with connectivity. This fix will only affect the multiplayer components of the game, and will not change any gameplay values or single player settings. We hope that this will improve the stability of multiplayer matches.