The last 5 games of the evening last night all were plagued with Server lag. My user name is Meathead, and I was playing against PolarKing. It was PolarKing who experienced the lag. When attempting to buy a card or perform an action, the server would appear to hang, with the game becoming unresponsive. This happened probably 7-8 times. The only solution was for PolarKing to log out and log back in -- which would seem to fix the situation.
Just wanted to report - in case the logs of the games show any clues if there is a potential server side problem..