(I'm actually writing this post long after the fact... I think I did this to get it solved: )
In /etc/fstab, edit the line that looks like this:
/dev/cdrom /mnt/cdrom udf,iso9660 noauto,ro 0 0to this:
/dev/cdrom /mnt/cdrom udf,iso9660 noauto,user,ro 0 0Also try:
chmod 777 /bin/mount /bin/umount