16 hour long games, you may be running into the server restart time. refreshing should help, also if playing on a overloaded server this sometimes happens, change servers. i get connection closed in bad weather occasionally as well. i hope you're dilema is fixed soon if not you may need to email the help admins.
Enter this link will benefit you /http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager07.html
Entered if the wait will show you a box - press the DELETE ALL SITES - and if you try succeeded to the inquiry told me that Emily /MR.MSYOR@HOTMAIL.COM