Update error

[gwillems]

    Dear fellow earthlings,

    I get this error:

    Failed to fetch
    http://mozilla.debian.net/dists/wheezy-backports/Release  Unable to
    find expected entry 'iceweasel-release/binary-amd64/Packages' in
    Release file (Wrong sources.list entry or malformed file)
    Some index files failed to download. They have been ignored, or old
    ones used instead.

    Running Debian Wheezy 64 bit.



    Gerard Willems.



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