after a fresh 9.04 install, my mount command doesn't do what it used to on 8.10.
i have a NAS and i used to type:
sudo mount -t nfs 192.168.2.243:/mnt/vader /media/vader
which would mount a folder on the NAS to a local folder.
now, when I type that I get:
mount: wrong fs type, bad option, bad superblock on 192.168.2.243:/mnt/vader,
missing codepage or helper program, or other error
(for several filesystems (e.g. nfs, cifs) you might
need a /sbin/mount.<type> helper program)
In some cases useful info is found in syslog - try
dmesg | tail or so