What's worse is that there was no disclosure before and some time after release that Solidshield was being used in the game and that there was a 5 machine activation limit. Admittedly there is a note on the Steam store page now that says Solidshield is being used but there's still no mention of the 5 machine activation limit.
I'm waiting for the day when Solidshield is removed from the Steam version so that I can give you my money. You do want people buying the game don't you?