Problem with apt-get upgrade

[Brian Poole <bpoole@primus.com.au>]

Hi I am getting the following problem when doing an apt-get upgrade:

I get many messages like:

Get:58 ftp://mirror.aarnet.edu.au unstable/main grep 2.5.1.ds1-2 [161kB]
Err ftp://mirror.aarnet.edu.au unstable/main grep 2.5.1.ds1-2
  Unable to fetch file, server said
'/debian/pool/main/g/grep/grep_2.5.1.ds1-2_i386.deb: No such file or
directory  '
Get:59 ftp://mirror.aarnet.edu.au unstable/main hostname 2.13 [9476B]
Err ftp://mirror.aarnet.edu.au unstable/main hostname 2.13
  Unable to fetch file, server said
'/debian/pool/main/h/hostname/hostname_2.13_i386.deb: No such file or
directory  '
Get:60 ftp://mirror.aarnet.edu.au unstable/main zlib1g 1:1.2.1-3
[61.2kB]
Err ftp://mirror.aarnet.edu.au unstable/main zlib1g 1:1.2.1-3
  Unable to fetch file, server said
'/debian/pool/main/z/zlib/zlib1g_1.2.1-3_i386.deb: No such file or
directory  '
Get:61 ftp://mirror.aarnet.edu.au unstable/main gsfonts 6.0-2.2 [1738kB]
Err ftp://mirror.aarnet.edu.au unstable/main gsfonts 6.0-2.2


This is my sources.list:

deb ftp://mirror.aarnet.edu.au/debian stable main contrib non-free
deb-src ftp://mirror.aarnet.edu.au/debian stable main contrib non-free

deb ftp://mirror.aarnet.edu.au/debian testing main contrib non-free
deb-src ftp://mirror.aarnet.edu.au/debian testing main contrib non-free

deb ftp://mirror.aarnet.edu.au/debian unstable main contrib non-free
deb-src ftp://mirror.aarnet.edu.au/debian unstable main contrib non-free

deb http://security.debian.org stable/updates main contrib non-free

Thanks