Black screen during update to 4.2.2 (Nexus 4)

Hey all,

I was just pushed the update to 4.2.2 but for some reason, after accepting the update, my phone has been stuck on a black screen (though clearly on) for the last 20 minutes or so. Is this normal?

The only things non-stock about my phone are the fact that it is rooted and I'm using the Franco kernel.

Any help would be much appreciated!