My 667MHz TiBook doesn't like optical discs either. Sometimes it decides it wants to play a DVD, other times it just doesn't recognise it. If it's reading data discs and DVDs, sounds like a preferences issue. Have you tried deleting all the preference files stated above?

and repair permissions, reset the PRAM...mad jew said:Maybe restore some of the optical drive's firmware to its default settings with a PMU reset.![]()