This past three week, I watched about ten new disks on my player (Pioneer DV-C503) and have had trouble with three of them: 1.) The bonus disk to LOST IN LA MANCHA would load fine, the menu would come up fine, but all the features had pixelating and distortions and the overall play was a mess. The disk played fine, however, on the store's Pioneer DVD player and has been used as a successful rental for the past three days. 2.) Disk 1 of THE DARK SHADOWS COLLECTION 6 had great difficulty after the layer change, with constant picture pixelation and sound distortion for the following chapter. After that chapter, the disk played fine, but I returned it anyway. 3.) My copy of PISTOL OPERA skipped around and pixelated a bit after the layer change - always in different places right after the layer change. This problem seems to have ceased after I wiped off the disk, but who knows? I'm waiting for replacements for the first two disks, so I cannot yet compare performances. What concerns me is this sudden increase in trouble. Is this a sign that my player needs to be replaced or have I had a string of bad luck?