We have been running KeyServer for over two years and have not had a single problem. Let me stress this point, we have not had any problems. The product has continued to pay for itself throughout its life cycle, from client deployment and server setup to day-to-day functionality and server fault tolerance.
I use KeyServer as the benchmark for evaluating all of our corporate software. KeyServer is not only an example of what great license management software should be but it is an example of great network management software.