What bugged me is:
I never, ever tinkered with my Kindle as I liked to do with my iLiad.
I just loaded it with good books, some games, one audiobook. Well, 2000 books.
In hindsight: it was after the book Anna Karenina from Amazon that I bought and not my own converted epub that the Kindle started to deteriorate.
When it went unstable: why could it only switch between the book(after factorydefault the User Guide) and Amazon.com. Couldn't go to ' home'.