I have had an annoying problem with my Kobo Aura HD. Pages automatically turn without touching the screen. Reboots and resets and the problem continued. I thought it was just the Nickel interface, so I installed Koreader and CoolReader. The Koreader worked fine, but crash in the last book I read on it, an don't open anymore. In CoolReader the problem of the pages passing continued.
I have several books downloaded on the internet, but the problem happened even when there were only books bought in the Kobo store.
Perhaps a problem with the touch screen?
(sorry for my poor english: Google translate from portuguese...)