I have had my Kindle for about a year and a half. About a week ago I noticed that the sleep screen on the top third of the screen would not shut off. I called Amazon and my options are to buy another 2nd generation Kindle for only $89 or a new one for $139. The refurbished 2nd gen. one would only have a 90 warranty. If you google Kindle there is a class action suit against Amazon for Kindles that crack on the side from being in a Kindle cover. If that was my problem, I would get a replacement free !!! I thought about cracking mine and then calling back.
With all that said, I hate that I have to buy another one, but I love it. So easy to carry and download books. I am an avid reader and to all my books available to read wherever I am is great. I did a lot of research on all the e-books and the Kindle is the best. After much thought, I will be calling Amazon today and ordering my replacement. I still think it's a great product. I would advise you to buy an extended warranty.
Also, go to amazon.com and read the reviews for yourself. Hope this helps.