After installing Leopard 10.5.4 on both my G4 1.33 Ghz/Superdrive Powerbook and my newer 20" Imac, neither will recognize a just burned burned cd-r on the desktop. After I access a playlist, insert and burn a cd-r, there is no icon on the desktop for the cd-r. I always have to restart the computer, and then the icon for the cd-r shows up fine. I've checked all my preferences and performed a PMU reset as suggested by Apple support, no change. There's lot's of discussion about this problem on various forums but I've yet to find anyone who has a fix. Anyone on this forum have any light to shed on this?