1. Pen: The pen suddently stops working at random moments for no apparent reason (the OneNote button still works, but the two others do not, and I can't use the pen to control or write anything either). Sometimes it comes back, sometimes it doesn't before the next reboot. An other annoyance, sometimes the pen will react to the screen while it's not even touching it. 2. The power button will not lock the screen, but instead show me the "slide to shut down your pc" page. That began two days ago. Am I the only one having these issues? This is my second SP3, and I am having the exact same issues as I had with the first one. The odd thing is that, I did not have any of these issues before the first two weeks of usage, on both devices. Edit: I tried repairing the pen, but it's the same story. I'll try to replace the battery tomorrow, but I will most likely have to get a replacement. And for the lock button, the toggles were both on sleep, so it seems like it is not the source of the problem.