Comment 2 for bug 181452

It's still present in the latest release candidate

 Linux macbook 2.6.24-16-generic #1 SMP Thu Apr 10 12:47:45 UTC 2008 x86_64 GNU/Linux
 DISTRIB_ID=Ubuntu
 DISTRIB_RELEASE=8.04
 DISTRIB_CODENAME=hardy
 DISTRIB_DESCRIPTION="Ubuntu 8.04"

Error:

"mount: wrong fs type, bad option, bad superblock on /dev/sdb4, missing codepage or helper program, or other error..."

$ sudo mount -t ffs /dev/sdb4 /mnt/
mount: unknown filesystem type 'ffs'

Trying to mount manually does not work:
$ sudo mount -t ufs /dev/sdb4 /mnt/
mount: wrong fs type, bad option, bad superblock on /dev/sdb4,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail or so

$ sudo dmesg | tail
[ 3102.614638] ufs was compiled with read-only support, can't be mounted as read-write
[ 3156.620572] You didn't specify the type of your ufs filesystem
[ 3156.620577]
[ 3156.620579] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...
[ 3156.620582]
[ 3156.620583] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
[ 3157.436978] UFS-fs error (device loop0): ufs_check_page: bad entry in directory #2: rec_len is too small for name_len - offset=0, rec_len=12, name_len=260
[ 3157.436993] UFS-fs error (device loop0): ufs_readdir: bad page in #2
[ 3176.255889] ufs was compiled with read-only support, can't be mounted as read-write
[ 3204.918809] ufs was compiled with read-only support, can't be mounted as read-write