My tablet has the known issue of icons vanishing on reset. Sony is finally acknowledging and says they are working on it. Now, I have another issue. Guest mode has vanished and that icon bar that was moved to the bottom with the last update is now back on the top. The apps that installed with the last update are still there, it says it is on 4.0.3 rev5, but is not acting like it. Anyone else have a similar issue or know a fix?