Originally Posted by kklee
I don't know if this is something introduced with the latest firmware. I couldn't find any threads about the problem and I had not experienced it before updating the firmware.
I had updated to 1.9.9 on Thursday night (was on previous version, 1.9.7). Yesterday while I was reading, the screen suddenly stopped responding to page turn taps. No response to swipes either. The menu button brought up the menu, but still no response to screen taps. I turned the KT off and back on and everything was back to normal.
Edit: Forgot to mention battery was around 90%, so it wasn't power.
Happened to me a couple days after the update as well. Hasn't happened since though.