The upgrade to Kaspersky Internet Security 2013 was a mistake. When you install the 2012 version will be removed. Then the 2013 version tries to install, aborts, uninstalled again and leaves me with a system back without protection. Supposedly my Fire Wall of the router the problem. Now after three years without any problems? Then the request to the Kaspersky Support without reaction. That was sometimes even better and so far the argument for Kaspersky. Conclusion: The program is bad, the support is bad, I'll write off the 54 for five licenses and install me another program on our computers.