Last two games I played, DO seemed to stall, so I refreshed the browser to see if it would help. In both cases, about 12 turns into the game, I came back to hear the resign sound at the login screen. I relogged in and I was taken back to the "you resigned" screen. Oddly, for the second game when this occurred, I was taken back to the resign screen of the PREVIOUS game I'd played, player, set-up and all.
I can't provide the game numbers for this because it isn't listed on the resign screen, but like I said, it's the previous two games I played as of this time. Username: Tamordnual