Kudos to Amazon for having GREAT customer service related to their Kindle ebook reader. I bought one last November, and it has worked great. However, this particular unit just REFUSES to upgrade to version 2.5 of the Kindle firmware, no matter what I do (manual installs, etc).
I called up Amazon yesterday, and within five minutes they were doing the necessary stuff to get a replacement Kindle2 sent my way. The replacement unit will be here Wednesday.