have you tried using that "free global network" outside of the usa? at least here in chile, things that you would get replaced for free (like those damn frayed power supply cords) just don't get replaced. you have to buy new ones. i haven't had any free service here for macs (my partner uses them and i get to fix them) - am reduced to buying bits on ebay and doing it myself (and am proud owner of a diverse collection of obscure driver bits as a consequence).
I've tried in a second-tier country (Germany) and in an obscure country (Taiwan). While I have never entered an Apple Store, at least I have received solid and free service by all authorized resellers so far.
