Does anyone else's Bionic get warm after any type of usage? I can understand the phone getting hot after playing a movie or a very graphic intensive game, but my phone gets warm when I do pretty much anything on it, ranging from browsing the web for more than a minute to checking email. As a result, my battery will rarely make it past 5-6 hrs (4G on with strong signal), since the phone will always be warm. Could this be a rogue app? Or is ~6 hrs on 4G to be expected?