Wonder if anyone has encountered this before.
Just rebooted my Ultra, and the Xperia Lockscreen has vanished. Cleared the data and forced stop with no change.
I'm left with the default JellyBean 4.3 lockscreen with just a black wallpaper. Can unlock the phone and all the widgets are still there.
I had inserted a micro sd car before rebooting. Any ideas what could be causing this?