I have a 2011 11" MacBook Air that I bought brand new from Apple a few months ago. I've never dropped it or had any liquid damage or anything. Under my settings I don't have the "Tap to click" checked, but I've noticed before (and more so today) that light taps with my finger on the trackpad keep registering as clicks, and it happens when I tap somewhere in the middle of my trackpad, but not always. And it's happened a lot today when I'm scrolling or even if I click once within this paragraph as I'm typing, it sometimes selects the whole word or the paragraph as if it's very sensitive to light touches. Has this happened to anyone? It should be covered by Apple right? I just hope I can reproduce it at the Genius bar.