Nexus 4 random reboots I've got an unrooted, plain vanilla 4.2.1 Nexus 4. Sometimes it randomly reboots itself while using it (and for all I know when it's not using it). Less than once a day problably, but I can't find a cause. IT does a weird sort of half-reboot too; it goes immediately to the big glowing X screen without the white Google screen that comes up during a cold reboot (off, then on).

The reboots don't seem to be caused by anything in particular; I've had one while running Chrome and one while running Gameboid. both of those run fine 99% of the time too, nothing has triggered the reboot more than once so I don't think it's a specific app.

Is this a known bug or caused by something or what? I'm mostly only using apps that worked on my last phone (which wasn't android 4.2) and stock apps, so I don't think it's any fishy apps.
I've experienced random reboots on Android 4.2 on the Nexus 7. From my research it looks like there may be an issue with Google's location services, but that's not verified. I don't think it's unique to your device in any case.

Take a look at this article which goes a little more in depth.