Im running 5.0.2 but yesterday my phone did a software update (24.41.53) and ever since then the lock screen has developed a fault/flaw: previously, to lock the screen I could just press the power button once and to unlock it I'd slide the little padlock up. Now, I can still lock it as normal but to unlock it I can simply press the power button again and it opens striaght up, no need to swipe the padlock. Is this a fault, or the dumbest update from a security point of view? Not only can anyone access the phone by pressing the power button, but every time it gets knocked in my pocket, it means I have no lock screen and anything can be pressed on screen by accident. Anyone else got this issue?