The deployment tracker is not being updated. It should be communicating back to the console after the installation is completed. This is proabaly a port communicaiton problem. Is this problem happening on multiple machines or only specific machines? I would review the port configuration in the administration manual on page 8 for what ports are required (see below). Also we have seen that if the console service is down for what ever reason, the updates fail to post to the deployment tracker.
Online Documentation: http://www.shavlik.com/support/onlinehelp.aspx
