My first KT got to be a pain, because over the course of the first three weeks or so, the bottom of the screen became more and more unresponsive.
If I accidentally tapped in the centre of the screen, opening the configuration options at the bottom, I couldn't choose any of them accurately nor click on the X to close the palette; it was sheer luck that I discovered I could close it again by tapping back in the centre panel of the text. But trying to page through my Library with the page slider at the bottom was impossible — it wouldn't respond at all. In the end I was limited to reading the books that showed up on the main section of my home page.
Just as they were about to run out, I took the device back to the shop where I bought it, and they proclaimed it faulty and replaced it. The new one has been (almost!) completely trouble-free.
