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# Automatically generated sources.list
# http://www.ubuntu-nl.org/source-o-matic/
#
# If you get GPG errors with this sources.list, locate the GPG key in this file
# and run these commands (where KEY is replaced with that key)
#
# gpg --keyserver hkp://subkeys.pgp.net --recv-keys KEY
# gpg --export --armor KEY | sudo apt-key add -
#
# If you don't know what to do with this file, read
# https://help.ubuntu.com/community/Repositories/CommandLine

# Ubuntu supported packages
# GPG key: 437D05B5
deb http://us.archive.ubuntu.com/ubuntu feisty main restricted 
deb http://us.archive.ubuntu.com/ubuntu feisty-updates main restricted
deb http://security.ubuntu.com/ubuntu feisty-security main restricted

# Ubuntu community supported packages
# GPG key: 437D05B5
deb http://us.archive.ubuntu.com/ubuntu feisty universe multiverse 
deb http://us.archive.ubuntu.com/ubuntu feisty-updates universe multiverse
deb http://security.ubuntu.com/ubuntu feisty-security universe multiverse

# deb http://packages.medibuntu.org/ gutsy free non-free
# #deb deb-src http://packages.medibuntu.org/ gutsy free non-free
# deb http://packages.medibuntu.org/ gutsy free non-free
# #deb deb-src http://packages.medibuntu.org/ gutsy free non-free

my error 

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booher@stadion:~$ sudo apt-get install wine
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
  msttcorefonts xdg-utils
The following NEW packages will be installed:
  wine
0 upgraded, 1 newly installed, 0 to remove and 113 not upgraded.
Need to get 9807kB of archives.
After unpacking 45.5MB of additional disk space will be used.
Get:1 http://us.archive.ubuntu.com feisty/universe wine 0.9.33-0ubuntu1 [9807kB]
Fetched 9807kB in 29s (337kB/s)
Selecting previously deselected package wine.
(Reading database ... 185365 files and directories currently installed.)
Unpacking wine (from .../wine_0.9.33-0ubuntu1_i386.deb) ...
Setting up wine (0.9.33-0ubuntu1) ...

W: Duplicate sources.list entry http://us.archive.ubuntu.com feisty/multiverse Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_feisty_multiverse_binary-i386_Packages)
W: Duplicate sources.list entry http://us.archive.ubuntu.com feisty/universe Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_feisty_universe_binary-i386_Packages)
W: Duplicate sources.list entry http://us.archive.ubuntu.com feisty/main Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_feisty_main_binary-i386_Packages)
W: Duplicate sources.list entry http://us.archive.ubuntu.com feisty-updates/multiverse Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_feisty-updates_multiverse_binary-i386_Packages)
W: Duplicate sources.list entry http://us.archive.ubuntu.com feisty-updates/universe Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_feisty-updates_universe_binary-i386_Packages)
W: Duplicate sources.list entry http://security.ubuntu.com feisty-security/multiverse Packages (/var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_feisty-security_multiverse_binary-i386_Packages)
W: Duplicate sources.list entry http://security.ubuntu.com feisty-security/universe Packages (/var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_feisty-security_universe_binary-i386_Packages)
W: You may want to run apt-get update to correct these problems