apt-get sources.list error

[Russ Pitman <russ@tasman.net.au>]

	In /etc/apt/sources.list I have,

  deb ftp://ftp.ca.debian.org/debian potato main contrib non-free non-US

	Running apt-get update gives the following,

--start here

Hit ftp://ftp.ca.debian.org potato/non-free Packages
Hit ftp://ftp.ca.debian.org potato/non-free Release
Get:1 ftp://ftp.ca.debian.org potato/non-US Packages
Err ftp://ftp.ca.debian.org potato/non-US Packages
  Unable to fetch file, server said
'/debian/dists/potato/non-US/binary-i386/Packages.gz: No such file or
directory  '
Get:2 ftp://ftp.ca.debian.org potato/non-US Release
Ign ftp://ftp.ca.debian.org potato/non-US Release
Failed to fetch
ftp://ftp.ca.debian.org/debian/dists/potato/non-US/binary-i386/Packages
  Unable to fetch file, server said
'/debian/dists/potato/non-US/binary-i386/Packages.gz: No such file or
directory  '
Reading Package Lists... Done
Building Dependency Tree... Done
W: Couldn't stat source package list 'ftp://ftp.ca.debian.org potato/non-US
Packages'
(/var/state/apt/lists/ftp.ca.debian.org_debian_dists_potato_non-US_binary-i386_Packages)
- stat (2 No such file or directory)

--end here---

	Tried local mirror and got similiar results. Could someone advise a
correct URL line to access the non-US directories.
		
	Thanks,
--