This is strange. My 13" actually stopped responding to hard clicks for 10-15 in a row and then would work 2-3 times. Genius bar took it in and put in a new trackpad no questions under apple care.
omg that drives me crazy. my mom does it all the time and i'm like "stopppp fingerprintssssss!" hahah.
also, you know how they say that the entire trackpad is the button? well, the upper part of the trackpad isn't clickable.. false advertising! haha. i don't care at all really, i just found it kind of funny.