A strange issue has come up on my G-Nex shortly after the update. At random times, my screen sensitivity will almost all but go away, meaning I have to mash the on-screen buttons for them to respond, and really push my finger down hard just to swipe from homescreen to homescreen. This happens with scrolling on websites, in apps, etc. Basically any touch command on the screen is very poor and sometimes doesn't respond at all. Oddly, this is fixed by simply putting the screen to sleep with the power button and then waking it back up. It's then back to normal and responds perfectly fine as it should. I can sometimes go hours before the problem will come back. Other times it comes back within 5 minutes. Has anyone else experienced this?