Been using .71 on my lumia 920 and all seem to work well except one thing. If I leave the phone for some time with out using it when I slide up to unlock the lockscreen it stays there (just showing the picture) for few seconds and then I get to the start screen. Its like it hangs there until load the start screen (I guess?). Any one with the same problem? .71 build seems good but obviously needs more optimizations (firmware updates maybe).