After the latest update(Nov '13; 98.19.94 on my phone) has your phone slow down some? Seems like it's doing things in the background. I've deleted apps that I'm not using that kept 'springing back to life' after shutting them down and still seems to be doing something. It isn't constant but it seems slower. Yes I've cleared the cache and all the usual suspects. No I didn't do a factory reset after the update and no I'm not going to....too much of a PIA.