A system for updating multiple copies of a software program on respective multiple devices includes a system for responding to a notification of a first copy of the software program in a first one of the devices; a system for sending a notification responded signal to a second one of the devices by the first device that the notification has been responded to; and a system for automatically preventing a duplicate of the notification from occurring in a second copy of the software program on the second device based upon the notification responded signal received by the second device from the first device.