I do not think that it could be a misconfiguration because this would maybe my tenth OS install (including DOS, Linux and Windows) but maybe I did not do something... Nevertheless next week I will format my other laptop and I can check that.
The other option it would since that I have installed the trial version and then inserted the license key maybe the system assumed that I was using the trial version (expired when I entered purchased key). I say that because the I think that the problem happen about midnight
Thanks,
Alex.