multiple mounts for cdrom, now can't get in

> Trying to copy some files and installing some rpm's, I had to eject a
> couple of times and the rpm installer eject the cd a couple of times.
> Now when I try to mount I can't get a listing.
>
> How do I update the system to remove the bad cdrom mounts?
>
>
> # mount
> /dev/hda9 on / type ext3 (rw,noatime)
> none on /proc type proc (rw)
> none on /proc/bus/usb type usbdevfs (rw)
> none on /dev type devfs (rw)
> /dev/hda6 on /boot type ext3 (rw,noatime)
> none on /dev/pts type devpts (rw,mode=0620)
> /dev/hda5 on /home type ext3 (rw,noatime)
> none on /mnt/floppy type supermount
> (rw,sync,dev=/dev/fd0,fs=auto,--,iocharset=iso8859-1,codepage=850,umask=0)
> /dev/hda1 on /mnt/nt type ntfs (ro,iocharset=iso8859-1,umask=0)
> /dev/hda7 on /var type ext3 (rw,noatime)
> none on /mnt/cdrom type supermount
> (ro,dev=/dev/hdc,fs=auto,--,iocharset=iso8859-1,codepage=850,umask=0)
> none on /mnt/cdrom type supermount
> (ro,dev=/dev/hdc,fs=auto,--,iocharset=iso8859-1,codepage=850,umask=0)
> none on /mnt/cdrom type supermount
> (ro,dev=/dev/hdc,fs=auto,--,iocharset=iso8859-1,codepage=850,umask=0)
> none on /mnt/cdrom type supermount
> (ro,dev=/dev/hdc,fs=auto,--,iocharset=iso8859-1,codepage=850,umask=0)

umount /mnt/cdrom