This game needs a session time out if you do not do some activity after so long, what would be even better is the inability to run multiple sessions.
This would to prevent situations like this:
viewtopic.php?f=3&t=5381How can people play the game when they are grieved and harassed by this slight flaw? Perhaps adding a code so if you do open multiple instances when you do something in a different instance, it times out the other open ones.