This seems to be on multiple sites across the web, in our own Problems section we have had a few reports on different disc problems as well.
Back in February of this year we had a user post information here about their 40GB PS3 having disc read issues. They said that their “PS3 stopped reading any disc, CD, DVD, Games and Bluray”. This was followed by other users reporting similar problems.
More recently, we heard reports of users having their Disc icon not appear on the xmb of the ps3 from a few users. They said that the PS3 game discs did not show, but Blu-ray movies worked fine.
One user even formatted their PS3 hard drive and found after doing so that the game discs started to show again. This showed that it was a software issue and not hardware.
Have you had any PS3 disc read issues, and more specifically the game discs not showing?
Source: PR news