Well this all started about 2 or 3 weeks ago. Usually while I'm browsing the internet(via Firefox) i will encounter an issue with the trackpad where the "Tap to Click" feature won't work or it will hesitate. Now i assumed that this may just be a problem while i was using Firefox. So i attempted doing the same thing to try to open other applications, still the same issue. the only thing that will temporarily fix it is when i open System Prefrences and deselect then reselect the option of "Tap to Click". Anyone have any advice or is anyone else having these issues? BTW: all the other Trackpad gestures work!