I have a 2016 15" pro with touch bar and upgraded graphics. I've have intermittent problems where it seems to lock up. I can touchpad the cursor around the screen, and the dock items even enlarge when I cursor over, but clicking anywhere does NOTHING. I'm thinking either something is hung up OR the trackpad isn't working. Any suggestions on how I figure out what is going one here? Anyone else with this problem? In almost all cases, eventually it works again. But the last time, I had to force power off.