Anyone found a working fix for this problem. I've tried clearing cache, restoring factory defaults, disabling lock screen, shutting down motions, and dummy file generator (generating 90-100% of internal space). I can always freeze and lockup the phone just by flipping the phone from landscape to portrait mode repeatly (usually happens in 5-6 turns). A battery pull is the only way to reset the phone.
...Just to reiterate, when flipping the phone, the phone freezes in mid flip, the screen usually stops mid turn aprox 30-40 degrees, the screen remains on, however no buttons will function (including power and holding power) and the only way to reset the phone is a battery pull.