W: Duplicate error with security.debian.org

[vaporized]

I get this error with a new system with 3. Install the required modules

when i update:

Code:

W: Duplicate sources.list entry http://security.debian.org etch/updates/main Packages (/var/lib/apt/lists/security.debian.org_dists_etch_updates_main_binary-i386_Packages)
W: Duplicate sources.list entry http://security.debian.org etch/updates/contrib Packages (/var/lib/apt/lists/security.debian.org_dists_etch_updates_contrib_binary-i386_Packages)
W: U kunt misschien 'apt-get update' uitvoeren om deze problemen te verhelpen