I just updated ZoneAlarm Free Firewall to version 11.0.000.038. The installation seem to work since the firewall is running. But there is the Configuration window ("Configuring ZoneAlarm Firewall ...") that I assume is part of the installation. It has now been stopped at 20 % progress for about three hours. I rebooted the computer, but it came up automatically again.
Running Windows 7 Pro.