I didn't touch the /etc/fstab entry when I installed FC2. The relevant line is
"/dev/cdrom /mnt/cdrom udf,iso9660 noauto,owner,kudzu,ro 0 0"
That's never given me any trouble. I can read and write CDs, and read DVDs. My drive is a DVD burner, but I haven't tried that yet, though I guess it would work.