It is very easy to exhaust the limited number of times it can be activated with your key.
I would guess i reached about 40 activations before i was told my key was overused.
I did format and installs and plain old uninstall/installs while trying to figure if changing the order of installing drivers and software would fix my various problems.
First off powerdvd 9 compatibility with windows 7 is a joke if you ask me. I would get one thing working and break another. The sad part is only powerdvd always had the problem. Every other software worked fine as always.
Oh well see if my support ticket gets me a new free activation key, because i am not buying another for certain.