Nope. I had my Kindle replaced 3 times, and never had to send the old ones back, even though I said to the rep that I have no problem with that.
Basically the original Paperwhite had a wifi bug where in a presence of certain SSIDs it would crash the wifi driver and the wifi would stop working entirely. So I would ring up amazon,explain the situation, they would send me a new paperwhite, the same thing would happen, rinse&repeat. They never acknowledged that it's actually a bug in their software,they just kept sending me new paperwhites. After I got 4 of them, I finally managed to convince the person on the phone that sending me new paperwhites does not fix my problem, and they agreed to send me the new paperwhite 2 - which did indeed fix the problem. I was told explicitly that I don't have to send the old kindles back - but they are blocked from joining the Amazon network again, so you can only use them offline. Still, looks like a massive waste for Amazon,but I guess it's like nothing for them.
