I have a blue iMac G3 400 mhz, slot loading CD-ROM. I have attached to this an Iomega 16x10x40 CD-RW via USB. When I try to burn a CD from iPhoto, it gets through all the pre-burn processes, but as soon as it tries to actually burn it tells me the burn has failed. Roxio Toast does burn, but it's much less convenient and a direct burn of the directories doesn't make sense the way iPhoto organizes the files on your HD. I was hoping iPhoto cleaned it up before it burned it, which is why I wanted to burn straight from iPhoto.