When I haven't used my NW-HD5 for a couple of hours and I press play or any other button, the backlight will go on, but the screen won't show anything. Music starts playing and all the buttons work, but I can't see anything on the screen. I have to turn it on and off a couple of times before the screen starts working. Really anoying!!! I've installed the ROM-update (v1.2) and used the volume-hack. Anyone has run into this too?