Just a quick 'one more thing' about the Nagios plugin check_confixxlicense... Please note, that this plugin currently only checks the validity of the date. I ran into problems last weekend when I had to change a physical server. Therefore a new MAC-address of the eth0 interface was in the system and Parallels obviously stores the MAC-address together with the Confixx license on a registration-server. A try to reactive the license in the Confixx menu won't work:
> *(3) Die Seriennummer ist bereits für einen anderen Server
vergeben. Bitte überprüfen Sie Ihre Daten. *
So as of now, the plugin only checks the validity of the license using the timestamp of the end date. Just wanted to have it mentioned.