Problems Mounting a CD

[Victor Gregorio]

Hello.  I'm having a problem mounting a CD, and was wondering if anyone 
could help.

root:~# dmesg | grep acd0
acd0: DVDROM <HL-DT-STDVD-ROM GDR8081N> at ata1-master PIO4
root:~# cat /etc/fstab | grep cdrom
/dev/acd0               /cdrom          cd9660  ro,noauto       0  0

root:~# mount /cdrom
cd9660: /dev/acd0: Invalid argument

root:~# mount_cd9660 /dev/acd0 /cdrom
mount_cd9660: /dev/acd0: Invalid argument

root:~# ls -l /dev/acd0
crw-r-----  1 root  operator    4,  18 Apr 12 15:42 /dev/acd0

The CD mounts OK on RedHat Linux with mount type cd9660.  What argument 
is invalid?  Or is this a known bug that I need to patch?  Thanks,

Victor