Poser 11 has always done this, but you used to be able to get it turned off if you contacted SmithMicro.

That is no longer the case. I believe the limit is 9 days. If Poser can't make contact with the mothership for 9 days, it stops working. Bondware might be able to give you a longer grace period, but you can no longer disable this "feature."

I hate it. But I think it's here to stay. Not because it's effective against piracy, but because they want Poser connected to the Internet to make shopping at Renderosity easier. E-On did that with Vue. It didn't end well. And now they're subscription only. :-P