I was playing with the poweroff submenu, scrolling through them. I decided to finally select the Now selection, and as it was scrolling the final way, the scrolling itself slowed down, and when I pressed the down button, it would not respond. I had to remove power. I just tried it again, and this time, the scrolling didn't slow down, but selecting the Now option didn't seem to do anything, but then the player rebooted, which may have been what happened before. In fact, now, every time I select Now from the poweroff submenu, it just reboots.