Just finished a long-ish session with the sync file and same deal: no de-sync. On the other hand, we were playing Entrenchment, not Diplomacy (where we've noticed we were out of sync every time within 75 minutes). But as for the connection type being a factor, I'm not so sure. I've had it over a LAN and over ICO. However, we never reloaded from a save, which we have every other time that we have noticed a de-sync.
Flitcraft
Anubis, I'm having the same problem. My partner and I have tried playing over a LAN and over ICO, and the game is always desyncing. Haven't seen whether or not these problems are cropping up with vanilla Sins or Entrenchment, but we'll be checking that out later today. As things stand right now, however, Diplomacy is unplayable for us in multiplayer.
I'm having this problem and it is rendering the game unplayable. If I play for extended period, I will probably experience a mini-dump crash. However, I rarely get that far because the game is desyncing well in advance of the crash. I've had the problem playing on a LAN and through Ironclad Online. The first warning that things are wrong comes when my friends and I pause the game and report the time we see on the pirate countdown. Once we see that the countdown timer is showing us dif