Those coupons don't do sh...anything. Neither the ones that came with my computer nor the ones that came in the 10.0 box. Well, I take that back: they give me false hope that Apple with be sensible and reasonable at some point in the near future. ;)
But... as an owner of OS X 10.0, I marched into CompUSA and was handed a copy of the 10.1 update for free. They didn't even want to see an update coupon or anything. I hope (though don't expect) that's the case with 10.3.
