>Go ahead. Challenge one of them. You'll find out differently.
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>>That only takes care of the initial agreement, it does not help with updates. Additionally, the legal enforceability of those checkboxes is not established. Of course, a person is still ethically bound, I am just speaking of legally.

I have no need to do so personally, nor do I have a need for your sarcasm. The legal enforceability of various EULA's has never been firnmly established, I suggest before you smart off again do a little checking. You can find some key cases listed in wikipedia at http://en.wikipedia.org/wiki/Software_license_agreement#Shrink-wrap_and_click-wrap_licenses