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This is going to be a ridiculously easy case to decide.
The instant Psystar started modifying the OS and pointing its copies of Leopard to its own update servers - I mean, heck, how did they think that would be legal? They might have been okay if they just let you buy Leopard and then install it for you - but they went too far. Goodbye, silly company.
The instant Psystar started modifying the OS and pointing its copies of Leopard to its own update servers
Not at all clear they did this. From the prose on the site it looks like they may have written a script which downloads from Apple and then does some kind of modified install. What would be unlawful about this? There does not seem to be any clause in the Eula which forbids it, and even if there were, does anyone seriously think it would be enforceable? You might as well require the user to only do his updates while standing on one leg and bowing in the direction of Cupertino.