I'm having a weird problem with my PS3. It will not recognize there is a DVD in the drive. It plays PS1 and PS3 games fine, plays music CDs fine and Blu-Ray movies fine. But when I insert a DVD it won't recognize. After about 15 seconds, the system gurgles the disc in the drive and then it just gives up. The blue light stays on but it won't let me load the movie.

The DVDs are in immaculate condition. wtf is going on

halp