Not sure how widespread this issue might be, but I've started noticing an issue where the home button my Nexus 10 fails. I had a lot of trouble flashing Paranoid Android on this device (don't know why), and now the Home Button appears dead. Only way to get back to the home screen is using the back nav key. The button's functionality returned after a Dalvik Cache wipe, but returned upon next boot. My Nexus 5 is running the PA ROM without any issues. Any advice? Thoughts?