I've had some really strange experiences the last couple of days with my 2013 N7. Bear with me as i try to explain.
A couple days ago I picked up my N7 after work and noticed the Fandango app had an update waiting. I tapped 'Update', and while it did its thing, i went to check something in the Play Store app settings, and noticed the version was 4.2.9. When the Fandango app finished updating, i opened it up to check out some showtimes. After that i went back to the Play app, into the settings again, and noticed that the app version had been bumped up to 4.3.1. When i tapped the home button, the N7 locked up, and i couldn't do anything at all. I powered it down and attempted to reboot, but no luck. I could get as far as the boot animation, but no further, no matter how long i let it run, or how many times i attempted to reboot. The only thing that worked was to completely wipe everything via fastboot, reinstall 4.3, and start from scratch. I thought my problems were solved, as everything seemed to work fine once i got everything re-installed and configured again.
Until i came home from work today, that is.
Upon arriving home, i unlocked my N7 and was greeted by several dialog boxes indicating that both the stock calendar app and Currents had crashed. Neither app could be opened, as they'd immediately crash. I thought maybe uninstalling/reinstalling updates for Calendar, would help, but the Play Store would crash immediately and could not be launched. I went into settings>apps and tried uninstalling updates and clearing data for all three apps, but only the Play Store app seemed to benefit from this. Nothing seems to help Calendar or Currents. They won't sync or open, and i've also just noticed that the Gallery immediately force closes when i try to launch that, too. My Google Voice app, which i used last night with no problems whatsoever, had lost all its data and had to be reconfigured from scratch. I'm still going through the rest of my apps one at a time to see if there are problems with any of them, but so far all other Google apps are working properly.
I'm perplexed as to what the problem is. Software issue? Hardware issue? I'm at a bit of a loss, but in any case i'm calling Google Support to ask for a replacement, just to be safe. I'm hoping that the N7 i have now is just a lemon, and not indicative of more widespread problems.
P.S...I tried using the N7 in safe mode, but i can't get anywhere because the Launcher continuously force closes on me.