Can anyone confirm if whether this is true? and if so what's the threshold for the change counter reset?
f you do have to reactivate XP, it doesn't mean you have to buy another copy, but you'll have to call Microsoft and get the company to issue you another activation ID. The threat of constant reactivation provoked such a serious public furor that Microsoft lightened up considerably on its reactivation trigger, and now indicates that it may reset your "change counter" sometime after 30, 60, or 90 or more days of using the same hardware.