I've read posts by a few people expressing their concern that scratches have appeared quickly on the screen of their new NW-HD5 / NW-HD5H. I've had an NW-HD1 since October and there are only a couple of small scratches which the average bod wouldn't notice and that only really show up in direct sunlight. I'd say that was to be expected after 8 months or so. Now that we've established the button cracking problem is pretty widespread I am interested to rule in or out the potential problem of screen scratching. Any thoughts?