Had the same problem (as in the last version) where the touch screen stops responding. I was reading, tapped to turn a page, the dictionary pops-up, and the touch screens stops responding. Hitting the main button brings me to the home screen, but touch screen still doesn't work.
Power down, power up, and all my books are gone except two (but there are three on the main screen that I didn't load. ) Goto the library, and only my two books are listed. Plug it into the PC, start up Calibre, and all my books are listed. Transfer a new book over using Calibre, and get a Calibre error. Disconnect, the kobo does it's processing thing, and looks like all my books are back. Plug it back in, start up Calibre, and get a device communication error.
Now it looks like whenever I use Calibre to access the device, I get a communication error (and I'm using an old version of Calibre, pre version checking, I think). It looks like transferring works, I just get a error message every time.
I guess it times for my bi-weekly factory reset?
