My journey with the Linux Operating System: aptitude update

root@Microknoppix:/home/knoppix#

root@Microknoppix:/home/knoppix# aptitude update

Get: 1 http://security.debian.org stable/updates InRelease [63.1 kB]

Ign http://ppa.launchpad.net trusty InRelease

Get: 2 http://packages.x2go.org squeeze InRelease [13.7 kB]

Ign http://packages.x2go.org squeeze InRelease

Ign http://debian-knoppix.alioth.debian.org ./ InRelease

Get: 3 http://ftp.de.debian.org stable InRelease [134 kB]

Get: 4 http://security.debian.org testing/updates InRelease [62.8 kB]

Get: 5 http://ppa.launchpad.net trusty Release.gpg [316 B]

Get: 6 http://packages.x2go.org wheezy InRelease [16.0 kB]

Ign http://packages.x2go.org wheezy InRelease

Ign http://debian-knoppix.alioth.debian.org ./ Release.gpg

Get: 7 http://security.debian.org stable/updates/main i386 Packages [126 kB]

Get: 8 http://ppa.launchpad.net trusty Release [15.1 kB]

Get: 9 http://security.debian.org stable/updates/contrib i386 Packages [2,500 B]

Get: 10 http://packages.x2go.org sid InRelease [16.0 kB]

Ign http://packages.x2go.org sid InRelease

Ign http://debian-knoppix.alioth.debian.org ./ Release

Get: 11 http://security.debian.org stable/updates/non-free i386 Packages [14 B]

Ign http://debian-knoppix.alioth.debian.org ./ Packages/DiffIndex

Get: 12 http://security.debian.org stable/updates/contrib Translation-en [1,098 B]

Get: 13 http://ppa.launchpad.net trusty/main Sources [771 B]

Get: 14 http://security.debian.org stable/updates/main Translation-en [69.2 kB]

Get: 15 http://security.debian.org stable/updates/non-free Translation-en [14 B]

Get: 16 http://ppa.launchpad.net trusty/main i386 Packages [609 B]

Get: 17 http://security.debian.org testing/updates/main i386 Packages [32 B]

Get: 18 http://security.debian.org testing/updates/contrib i386 Packages [32 B]

Get: 19 http://ppa.launchpad.net trusty/main Translation-en [300 B]

Get: 20 http://ftp.de.debian.org testing InRelease [129 kB]

Get: 21 http://security.debian.org testing/updates/non-free i386 Packages [32 B]

Get: 22 http://security.debian.org testing/updates/contrib Translation-en [14 B]

Get: 23 http://security.debian.org testing/updates/main Translation-en [14 B]

Get: 24 http://ftp.de.debian.org unstable InRelease [200 kB]

Get: 25 http://security.debian.org testing/updates/non-free Translation-en [14 B]

Get: 26 http://www.deb-multimedia.org squeeze InRelease [20.0 kB]

Get: 27 http://ftp.de.debian.org experimental InRelease [152 kB]

Get: 28 http://ftp.de.debian.org stable-updates InRelease [123 kB]

Ign http://www.deb-multimedia.org squeeze InRelease

Get: 29 http://ftp.de.debian.org stable/main i386 Packages [6,767 kB]

Get: 30 http://www.deb-multimedia.org squeeze/main i386 Packages [87.0 kB]

Get: 31 http://debian-knoppix.alioth.debian.org ./ Packages [103 kB]

Get: 32 http://www.deb-multimedia.org squeeze/non-free i386 Packages [5,043 B]

Ign http://debian-knoppix.alioth.debian.org ./ Translation-en_US

Ign http://debian-knoppix.alioth.debian.org ./ Translation-en

Get: 33 http://packages.x2go.org squeeze/main i386 Packages [31.3 kB]

Get: 34 http://packages.x2go.org wheezy/main i386 Packages [28.8 kB]

Ign http://www.deb-multimedia.org squeeze/main Translation-en_US

Ign http://www.deb-multimedia.org squeeze/main Translation-en

Get: 35 http://packages.x2go.org sid/main i386 Packages [26.0 kB]

Ign http://www.deb-multimedia.org squeeze/non-free Translation-en_US

Ign http://www.deb-multimedia.org squeeze/non-free Translation-en

Ign http://packages.x2go.org squeeze/main Translation-en_US

Ign http://packages.x2go.org squeeze/main Translation-en

Ign http://packages.x2go.org wheezy/main Translation-en_US

Ign http://packages.x2go.org wheezy/main Translation-en

Ign http://packages.x2go.org sid/main Translation-en_US

Ign http://packages.x2go.org sid/main Translation-en

Get: 36 http://ftp.de.debian.org stable/contrib i386 Packages [49.6 kB]

Get: 37 http://ftp.de.debian.org stable/non-free i386 Packages [79.7 kB]

Get: 38 http://ftp.de.debian.org stable/contrib Translation-en [38.4 kB]

Get: 39 http://ftp.de.debian.org stable/main Translation-en [4,585 kB]

Get: 40 http://ftp.de.debian.org stable/non-free Translation-en [72.2 kB]

Get: 41 http://ftp.de.debian.org testing/main i386 Packages/DiffIndex [7,876 B]

Get: 42 http://ftp.de.debian.org testing/contrib i386 Packages/DiffIndex [7,819 B]

Get: 43 http://ftp.de.debian.org testing/non-free i386 Packages/DiffIndex [7,405 B]

Get: 44 http://ftp.de.debian.org testing/contrib Translation-en [41.2 kB]

Get: 45 http://ftp.de.debian.org testing/main Translation-en [4,780 kB]

Get: 46 http://ftp.de.debian.org testing/non-free Translation-en [75.1 kB]

Get: 47 http://ftp.de.debian.org unstable/main i386 Packages/DiffIndex [7,876 B]

Get: 48 http://ftp.de.debian.org unstable/contrib i386 Packages/DiffIndex [7,819 B]

Get: 49 http://ftp.de.debian.org unstable/non-free i386 Packages/DiffIndex [7,819 B]

Get: 50 http://ftp.de.debian.org unstable/contrib Translation-en [45.4 kB]

Get: 51 http://ftp.de.debian.org unstable/main Translation-en [5,048 kB]

Get: 52 http://ftp.de.debian.org unstable/non-free Translation-en [77.7 kB]

Get: 53 http://ftp.de.debian.org experimental/main i386 Packages/DiffIndex [7,819 B]

Get: 54 http://ftp.de.debian.org experimental/contrib i386 Packages/DiffIndex [7,819 B]

Get: 55 http://ftp.de.debian.org experimental/non-free i386 Packages/DiffIndex [7,819 B]

Get: 56 http://ftp.de.debian.org experimental/contrib Translation-en [4,581 B]

Get: 57 http://ftp.de.debian.org experimental/main Translation-en [310 kB]

Get: 58 http://ftp.de.debian.org experimental/non-free Translation-en [8,902 B]

Get: 59 http://ftp.de.debian.org stable-updates/main i386 Packages/DiffIndex [505 B]

Get: 60 http://ftp.de.debian.org stable-updates/contrib i386 Packages [14 B]

Get: 61 http://ftp.de.debian.org stable-updates/non-free i386 Packages [14 B]

Get: 62 http://ftp.de.debian.org stable-updates/contrib Translation-en [14 B]

Get: 63 http://ftp.de.debian.org stable-updates/main Translation-en [2,506 B]

Get: 64 http://ftp.de.debian.org stable-updates/non-free Translation-en [14 B]

Get: 65 http://ftp.de.debian.org stable-updates/main i386 Packages [3,676 B]

Get: 66 http://ftp.de.debian.org testing/main i386 Packages [7,099 kB]

Get: 67 http://ftp.de.debian.org testing/contrib i386 Packages [51.4 kB]

Get: 68 http://ftp.de.debian.org testing/non-free i386 Packages [82.5 kB]

Get: 69 http://ftp.de.debian.org unstable/main i386 Packages [7,503 kB]

Get: 70 http://ftp.de.debian.org unstable/contrib i386 Packages [57.6 kB]

Get: 71 http://ftp.de.debian.org unstable/non-free i386 Packages [85.4 kB]

Get: 72 http://ftp.de.debian.org experimental/main i386 Packages [535 kB]

Get: 73 http://ftp.de.debian.org experimental/contrib i386 Packages [6,896 B]

Get: 74 http://ftp.de.debian.org experimental/non-free i386 Packages [9,744 B]

Fetched 38.9 MB in 3min 27s (187 kB/s)

W: GPG error: http://packages.x2go.org squeeze InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E1F958385BFE2B6E