Got this unit several days ago and am really diggin it so far. Coming from a black berry so you can imagine the experience! I am noticing a slight rattle noise if taped lightly on the back of the device on the top (near camera) though not on the bottom. As if something internal is loose. It's also noticeable when it vibrates on a hard service. It's not a HUGE deal but annoying none the less and considering what we pay for these I'm expecting a device that does not do this. Anyone else have this issue? I'm wondering if all are like this or if I should return for an exchange. thanks!