The registration process bothers me in regards to the potential of being unable to use it in the future. Can't comment on the rest - I for one refuse to buy P5 because of the EULA and how it could affect 3-D Arena and the changes we have planned for the coming year.

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I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.
-Galileo