Random crash to "X" screen

[Pflast]

since the update to 4.3 my Nexus 7 keeps randomly flashing back to the nexus "x" screen and restarting. Google forum says an app is probably causing it, but short of uninstalling one by one I have no way to tell which one it is. Anyone have similar issues, know which app?

 

[Slender Troll]

When did this problem start?

Sent from my Nexus 4 using Tapatalk 4 Beta

 

[Pflast]

Around a week ago.

 

[Slender Troll]

What apps have you installed since then?

Sent from my Nexus 4 using Tapatalk 4 Beta

 

[Pflast]

No new apps since the android update.

 

[Slender Troll]

What apps are you using when it crashes?

Sent from my Nexus 4 using Tapatalk 4 Beta

 

[Pflast]

Its random. Internet, Facebook, sometimes nothing is running and the screen is off. The screen will come back on to the x screen on its own.