Can't Eject Disk After Slideshow

Intel Mac Pro w/ 10.4.10.

I put a CD full of photos in my drive. I navigate to a folder, select all the images, right-click and select "Slideshow".

Very cool feature, except one image always gets hung up. When I'm done, and exit the slideshow, I try to eject the disk, and it won't let me. It says whateverpic.jpg is being used, so it can't eject.

Same thing if I copy the files to my hard drive, view a slideshow, then try to delete those files. OS X refuses to delete one, because it's in use.

Rebooting seems to be the only way to get it to release that last photo so I can eject/delete.

Any idears?

Thanks.