Je suis débutant, hein, mais pas à ce point là, je connais un peu quand même les commandes de base, et le terminal je m'en sers régulièrement, en fait j'avais mis ça surtout pour avoir plus de réponses, c'est donc de ma faute...
Bon, le résultat du sudo aptitude update :
Hit http://fr.archive.ubuntu.com lucid Release.gpg
Get:1 http://fr.archive.ubuntu.com lucid-updates Release.gpg [189B]
Hit http://fr.archive.ubuntu.com lucid Release
Hit http://security.ubuntu.com lucid-security Release.gpg
Hit http://ppa.launchpad.net lucid Release.gpg
Hit http://ppa.launchpad.net lucid Release.gpg
Hit http://archive.canonical.com lucid Release.gpg
Get:2 http://fr.archive.ubuntu.com lucid-updates Release [44.7kB]
Hit http://security.ubuntu.com lucid-security Release
Hit http://ppa.launchpad.net lucid Release
Hit http://archive.canonical.com lucid Release
Hit http://ppa.launchpad.net lucid Release
Hit http://security.ubuntu.com lucid-security/main Packages
Hit http://archive.canonical.com lucid/partner Packages
Hit http://ppa.launchpad.net lucid/main Packages
Hit http://security.ubuntu.com lucid-security/restricted Packages
Hit http://security.ubuntu.com lucid-security/main Sources
Hit http://ppa.launchpad.net lucid/main Packages
Hit http://security.ubuntu.com lucid-security/restricted Sources
Hit http://security.ubuntu.com lucid-security/universe Packages
Hit http://security.ubuntu.com lucid-security/universe Sources
Hit http://security.ubuntu.com lucid-security/multiverse Packages
Hit http://security.ubuntu.com lucid-security/multiverse Sources
Hit http://fr.archive.ubuntu.com lucid/main Packages
Hit http://fr.archive.ubuntu.com lucid/restricted Packages
Hit http://fr.archive.ubuntu.com lucid/main Sources
Hit http://fr.archive.ubuntu.com lucid/restricted Sources
Hit http://fr.archive.ubuntu.com lucid/universe Packages
Hit http://fr.archive.ubuntu.com lucid/universe Sources
Hit http://fr.archive.ubuntu.com lucid/multiverse Packages
Hit http://fr.archive.ubuntu.com lucid/multiverse Sources
Get:3 http://fr.archive.ubuntu.com lucid-updates/main Packages [283kB]
Get:4 http://fr.archive.ubuntu.com lucid-updates/restricted Packages [3252B]
Get:5 http://fr.archive.ubuntu.com lucid-updates/main Sources [103kB]
Get:6 http://fr.archive.ubuntu.com lucid-updates/restricted Sources [1292B]
Get:7 http://fr.archive.ubuntu.com lucid-updates/universe Packages [104kB]
Get:8 http://fr.archive.ubuntu.com lucid-updates/universe Sources [34.9kB]
Get:9 http://fr.archive.ubuntu.com lucid-updates/multiverse Packages [3771B]
Get:10 http://fr.archive.ubuntu.com lucid-updates/multiverse Sources [1508B]
Fetched 580kB in 1s (304kB/s)
Reading package lists... Done
Current status: 6 updates [+6].
Et pour le sudo aptitude safe-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
The following packages will be upgraded:
ghostscript ghostscript-cups ghostscript-x libgs8 libkpathsea5 ubufox
6 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 3467kB of archives. After unpacking 0B will be used.
Do you want to continue? [Y/n/?] y
Writing extended state information... Done
Get:1 http://fr.archive.ubuntu.com/ubuntu/ lucid-updates/main ghostscript 8.71.dfsg.1-0ubuntu5.3 [785kB]
Get:2 http://fr.archive.ubuntu.com/ubuntu/ lucid-updates/main libgs8 8.71.dfsg.1-0ubuntu5.3 [2370kB]
Get:3 http://fr.archive.ubuntu.com/ubuntu/ lucid-updates/main ghostscript-cups 8.71.dfsg.1-0ubuntu5.3 [51.7kB]
Get:4 http://fr.archive.ubuntu.com/ubuntu/ lucid-updates/main ghostscript-x 8.71.dfsg.1-0ubuntu5.3 [69.3kB]
Get:5 http://fr.archive.ubuntu.com/ubuntu/ lucid-updates/main libkpathsea5 2009-5ubuntu0.2 [130kB]
Get:6 http://fr.archive.ubuntu.com/ubuntu/ lucid-updates/main ubufox 0.9~rc2-0ubuntu2.1 [61.2kB]
Fetched 3467kB in 5s (614kB/s)
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Ne peut initialiser LC_ALL �� la locale par d��faut: Aucun fichier ou dossier de ce type
(Reading database ... 212174 files and directories currently installed.)
Preparing to replace ghostscript 8.71.dfsg.1-0ubuntu5.2 (using .../ghostscript_8.71.dfsg.1-0ubuntu5.3_i386.deb) ...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
Cleaning up font configuration of gs...
Cleaning up category psprint..
Cleaning up category cmap..
Cleaning up category cid..
Cleaning up category truetype..
Cleaning up category gsfontderivative..
Cleaning up category type3..
Cleaning up category type1..
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
Unpacking replacement ghostscript ...
Preparing to replace libgs8 8.71.dfsg.1-0ubuntu5.2 (using .../libgs8_8.71.dfsg.1-0ubuntu5.3_i386.deb) ...
Unpacking replacement libgs8 ...
Preparing to replace ghostscript-cups 8.71.dfsg.1-0ubuntu5.2 (using .../ghostscript-cups_8.71.dfsg.1-0ubuntu5.3_i386.deb) ...
Unpacking replacement ghostscript-cups ...
Preparing to replace ghostscript-x 8.71.dfsg.1-0ubuntu5.2 (using .../ghostscript-x_8.71.dfsg.1-0ubuntu5.3_i386.deb) ...
Unpacking replacement ghostscript-x ...
Preparing to replace libkpathsea5 2009-5ubuntu0.1 (using .../libkpathsea5_2009-5ubuntu0.2_i386.deb) ...
Unpacking replacement libkpathsea5 ...
Preparing to replace ubufox 0.9~rc2-0ubuntu2 (using .../ubufox_0.9~rc2-0ubuntu2.1_all.deb) ...
Unpacking replacement ubufox ...
Processing triggers for man-db ...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Ne peut initialiser LC_ALL �� la locale par d��faut: Aucun fichier ou dossier de ce type
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
/usr/bin/mandb: can't set the locale; make sure $LC_* and $LANG are correct
Setting up libgs8 (8.71.dfsg.1-0ubuntu5.3) ...
Setting up ghostscript (8.71.dfsg.1-0ubuntu5.3) ...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
update-alternatives: using /usr/bin/ps2pdf14 to provide /usr/bin/ps2pdf (ps2pdf) in auto mode.
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
Updating font configuration of gs...
Cleaning up category psprint..
Cleaning up category cmap..
Cleaning up category cid..
Cleaning up category truetype..
Cleaning up category gsfontderivative..
Cleaning up category type3..
Cleaning up category type1..
Updating category type1..
Updating category type3..
Updating category gsfontderivative..
Updating category truetype..
Updating category cid..
Updating category cmap..
Updating category psprint..
No CIDSupplement specified for Batang-Bold, defaulting to 0.
No CIDSupplement specified for Batang-Regular, defaulting to 0.
No CIDSupplement specified for Dotum-Regular, defaulting to 0.
No CIDSupplement specified for Dotum-Bold, defaulting to 0.
Setting up ghostscript-cups (8.71.dfsg.1-0ubuntu5.3) ...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "fr_LU.utf8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
Setting up ghostscript-x (8.71.dfsg.1-0ubuntu5.3) ...
Setting up libkpathsea5 (2009-5ubuntu0.2) ...
Setting up ubufox (0.9~rc2-0ubuntu2.1) ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
Current status: 0 updates [-6].
Voilà ! Par contre, je sais pas interpréter.