We got a Planet Earth blu-ray disc from Netflix. It had a little crack in the edge of the disc that seems to affect some blu-ray discs. Documented here. The disc errors out when I first try to play it in the PS3, but plays the second time. However, it stopped playing near the end of the disc (because of the crack?) I was wondering if it might be because of the rounded edge of a blu-ray weakening the structure in some way.