That speck appears to be there in the first image as well, though not as bright...? I wonder if Philae actually landed exactly where computed (the green square

That speck appears to be there in the first image as well, though not as bright...? I wonder if Philae actually landed exactly where computed (the green square), and if so why the dark dust does not radiate from that spot, but "down-wards". Perhaps Philae hit the surface at an angle?