Forget gnome toaster, it's obsolete. It simply won't work with the 2.6 kernels if you're using an IDE CD writer. Use K3b (it's in the distro) or burn CDs manually with cdrecord. See this bugzilla report and the explanation for more details: http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=120492
Hmm, that's strange. I use gnome toaster like, everyday. I've never had a problem with it and my sony burner.
Alex White