I wont touch p5 until the protection system is gone. I upgrade constantly and have 3 desktops spread around my house (bedroom, basement, living room) + laptop that I would normally like to install on... I only use 1 machine at a time naturally. I just like to be able to work whenever/wherever the inspiration hits.. Protection systems always penalize the legit user as the hackers have patches to get around things in seconds... Amazing adobe after affects production bundle a $1,800.00 program trusts their users with a key they type in. In addition it appears at the moment that poser 5 is a version .8 product, should be interesting to see how often patches will be released to address various issues. d