I know that the PS3 is hyper-sensitive to fingerprints on the BR disk. My problem occurs when my PS3 has been working hard all day, playing three or more movies, it quits reading the next BR movie. I sometimes have to hit the power switch on the back and let it relax for a day. Everything else works. Ventilation is good. I have the 60GB version. Firmware updated to the most recent version.
Anyone else having this problem?