As long as it is not to bad don't worry about it. Mine will do that once or so every couple of hours. After 2 or 3 touches it registers. It's not that bad at all as it could be a lot worse. I have a Samsung tab 3 also and overall it is a much better built and more reliable tablet, with none of the quirks that the n7 has. Don't get me wrong I love the nexus and am actually starting to almost prefer the straight android experience over the Samsung. Its the build quality however that keeps this tablet from being as good as it could be. I went through two before settling on the one I have now. First 2 had horrible light bleed, and the third which I decided to keep is much better, but still has light bleed on the top of screen which basically all of them have to some extent. That is something you really don't see on a Samsung tablet.