Picked up my Nexus 10 last week and absolutely loving it so far. One of the key points in my decision was being able to set up separate user accounts for my wife, son and daughter. Also working like a charm, but one minor issue is nagging me. Is it correct that there is no way to force Jellybean to use the picture profile from your Google account as your default userpicture on the lockscreen? So far I have not found a way to accomplish this, so I guess I'm stuck to manually setting the userpicture for each account? Am I missing something here?