I think that I bought my Kindle about 18 months ago. It would be about a couple of weeks ago that I was first unable to get int hte shop and it was about the same time that it appeared to be a bit sluggish in responding.
Yesterday I started reading a new book and it was fine except for being a bit slow in turning the pages.
Last night it virtually froze on me. It did start off when I first opened it by opening earlier than where I was up to and then suddenly when I tried to go to another page it would only come up with the kindle page and then the home page and this was all that I was able to get.