Im part of a phantom group on facebook and ive been hear that alot of the RTH fly aways are from people with Android devices running the latest app version 3.1.2 i beleive, anyway whats happening is that its showing your current position as being miles away from where you really are, so when RTH is requested its going to the false location therefore making you think its flying away you have to install the 3.0.1 apk file for android