C’est de ma faute … fatigue oblige … 
J’avais corrigé, mais trop tard !
# aptitude -s install gnome
Que importe !
La bonne nouvelle, je crois 
[quote]:~# aptitude -s reinstall gnome
gnome n’est pas actuellement installé, il ne sera donc pas réinstallé.
gnome n’est pas actuellement installé, il ne sera donc pas réinstallé.
Aucun paquet ne va être installé, mis à jour ou enlevé.
0 paquets mis à jour, 0 nouvellement installés, 0 à enlever et 0 non mis à jour.
Il est nécessaire de télécharger 0 o d’archives. Après dépaquetage, 0 o seront utilisés.
Charger/installer/enlever des paquets.[/quote]
Question.
Qu’as tu installais en guise d’interface ? apparemment ce n’est pas gnome (sauf erreur) kde ? autre ?
Lance une simulation du paquet de ton choix.
# aptitude -s install <le_paquet>
-edit-
Ouua ! bizarre …
loreleil@machine1:~$ aptitude -s install gnome
Les NOUVEAUX paquets suivants vont être installés :
alacarte{a} apache2.2-bin{a} app-install-data{a} aptdaemon{a} baobab{a} bluez{a} brasero{a} brasero-common{a} capplets-data{a} cheese{a} cheese-common{a} cli-common{a}
deskbar-applet{a} desktop-file-utils{a} dmz-cursor-theme{a} docbook-xml{a} ekiga{a} empathy{a} empathy-common{a} eog{a} epiphany-browser{a} epiphany-browser-data{a}
epiphany-extensions{a} evince{a} evince-common{a} evolution{a} evolution-common{a} evolution-data-server{a} evolution-data-server-common{a} evolution-exchange{a}
evolution-plugins{a} evolution-webcal{a} file-roller{a} gcalctool{a} gconf-defaults-service{a} gconf-editor{a} gdm3{a} gedit{a} gedit-common{a} gedit-plugins{a} geoclue{a}
gir1.0-clutter-1.0{a} gir1.0-freedesktop{a} gir1.0-glib-2.0{a} gir1.0-gstreamer-0.10{a} gir1.0-gtk-2.0{a} gir1.0-json-glib-1.0{a} gnome gnome-about{a} gnome-applets{a}
gnome-applets-data{a} gnome-backgrounds{a} gnome-bluetooth{a} gnome-cards-data{a} gnome-codec-install{a} gnome-control-center{a} gnome-core{a} gnome-desktop-data{a}
gnome-desktop-environment{a} gnome-dictionary{a} gnome-disk-utility{a} gnome-doc-utils{a} gnome-games{a} gnome-games-data{a} gnome-js-common{a} gnome-media{a}
gnome-media-common{a} gnome-menus{a} gnome-netstatus-applet{a} gnome-nettool{a} gnome-panel{a} gnome-panel-data{a} gnome-power-manager{a} gnome-screensaver{a}
gnome-screenshot{a} gnome-search-tool{a} gnome-session{a} gnome-session-bin{a} gnome-session-common{a} gnome-settings-daemon{a} gnome-system-log{a} gnome-system-monitor{a}
gnome-system-tools{a} gnome-terminal{a} gnome-terminal-data{a} gnome-themes{a} gnome-themes-extras{a} gnome-user-guide{a} gnome-user-share{a} gnome-utils-common{a}
gnuchess{a} gstreamer0.10-alsa{a} gstreamer0.10-nice{a} gstreamer0.10-plugins-good{a} gstreamer0.10-plugins-ugly{a} gstreamer0.10-tools{a} gstreamer0.10-x{a}
gtk2-engines{a} gtk2-engines-pixbuf{a} gucharmap{a} guile-1.8-libs{a} gvfs-backends{a} gvfs-bin{a} hamster-applet{a} liba52-0.7.4{a} libapache2-mod-dnssd{a} libapr1{a}
libaprutil1{a} libaprutil1-dbd-sqlite3{a} libaprutil1-ldap{a} libart2.0-cil{a} libavahi-gobject0{a} libavahi-ui0{a} libavc1394-0{a} libbrasero-media0{a} libburn4{a}
libcamel1.2-14{a} libcap-ng0{a} libcdio-cdda0{a} libcdio-paranoia0{a} libchamplain-0.4-0{a} libchamplain-gtk-0.4-0{a} libcheese-gtk18{a} libclutter-1.0-0{a}
libclutter-gtk-0.10-0{a} libcryptui0{a} libdiscid0{a} libdv4{a} libebackend1.2-0{a} libebook1.2-9{a} libecal1.2-7{a} libedata-book1.2-2{a} libedata-cal1.2-7{a}
libedataserver1.2-13{a} libedataserverui1.2-8{a} libegroupwise1.2-13{a} libepc-1.0-2{a} libepc-common{a} libepc-ui-1.0-2{a} libevince2{a} libevolution{a} libgalago3{a}
libgconf2.0-cil{a} libgdata-common{a} libgdata-google1.2-1{a} libgdata1.2-1{a} libgdata7{a} libgdict-1.0-6{a} libgdu-gtk0{a} libgeoclue0{a} libgirepository1.0-0{a}
libglade2.0-cil{a} libglib2.0-cil{a} libgmime-2.4-2{a} libgmime2.4-cil{a} libgnome-bluetooth7{a} libgnome-desktop-2-17{a} libgnome-media0{a} libgnome-menu2{a}
libgnome-vfs2.0-cil{a} libgnome-window-settings1{a} libgnome2-canvas-perl{a} libgnome2-perl{a} libgnome2-vfs-perl{a} libgnome2.24-cil{a} libgnomekbd-common{a}
libgnomekbd4{a} libgnomepanel2.24-cil{a} libgpod4{a} libgssdp-1.0-2{a} libgstfarsight0.10-0{a} libgtk2.0-cil{a} libgtkhtml-editor-common{a} libgtkhtml-editor0{a}
libgtkhtml3.14-19{a} libgtkimageview0{a} libgtksourceview2.0-0{a} libgtksourceview2.0-common{a} libgtkspell0{a} libgucharmap7{a} libgupnp-1.0-3{a} libgupnp-igd-1.0-3{a}
libgweather-common{a} libgweather1{a} libid3tag0{a} libiec61883-0{a} libimobiledevice1{a} libisofs6{a} libjson-glib-1.0-0{a} libkpathsea5{a} liblircclient0{a}
libmetacity-private0{a} libmono-addins-gui0.2-cil{a} libmono-addins0.2-cil{a} libmono-cairo2.0-cil{a} libmono-corlib2.0-cil{a} libmono-posix2.0-cil{a}
libmono-security2.0-cil{a} libmono-sharpzip2.84-cil{a} libmono-system2.0-cil{a} libmpeg2-4{a} libmtp8{a} libmusicbrainz3-6{a} libndesk-dbus-glib1.0-cil{a}
libndesk-dbus1.0-cil{a} libnet-dbus-perl{a} libnet1{a} libnice0{a} libnm-glib2{a} libnm-util1{a} liboobs-1-4{a} libopal3.6.8{a} libopenobex1{a} libplist1{a}
libpolkit-gtk-1-0{a} libproxy0{a} libpt2.6.7{a} librarian0{a} libseed0{a} libshout3{a} libsidplay1{a} libslab0a{a} libsoup-gnome2.4-1{a} libt1-5{a}
libtelepathy-farsight0{a} libtelepathy-glib0{a} libtotem-plparser17{a} libtracker-client-0.8-0{a} libtwolame0{a} libunique-1.0-0{a} libupower-glib1{a} libusbmuxd1{a}
libxml-parser-perl{a} libxml-twig-perl{a} media-player-info{a} metacity{a} metacity-common{a} mono-2.0-gac{a} mono-gac{a} mono-runtime{a} nautilus{a} nautilus-data{a}
nautilus-sendto{a} obex-data-server{a} obexd-client{a} python-aptdaemon{a} python-aptdaemon-gtk{a} python-beautifulsoup{a} python-bugbuddy{a} python-evolution{a}
python-feedparser{a} python-gdata{a} python-gdbm{a} python-gmenu{a} python-gnomeapplet{a} python-gnomedesktop{a} python-gnomekeyring{a} python-gnupginterface{a}
python-gst0.10{a} python-gtkglext1{a} python-gtksourceview2{a} python-httplib2{a} python-opengl{a} python-pkg-resources{a} python-rdflib{a} python-software-properties{a}
python-webkit{a} python-wnck{a} python-xapian{a} python-xdg{a} remmina{a} rhythmbox{a} rhythmbox-plugin-cdrecorder{a} rhythmbox-plugins{a} seahorse{a} seahorse-plugins{a}
sgml-data{a} software-center{a} sound-juicer{a} synaptic{a} system-tools-backends{a} tcptraceroute{a} telepathy-mission-control-5{a} tomboy{a} totem{a} totem-common{a}
totem-mozilla{a} totem-plugins{a} transmission-common{a} transmission-gtk{a} unattended-upgrades{a} upower{a} usbmuxd{a} vino{a} xdg-user-dirs{a} xdg-user-dirs-gtk{a}
xsltproc{a} yelp{a}
Les paquets suivants sont RECOMMANDÉS mais ne seront pas installés :
apt-xapian-index at-spi binfmt-support blam bogofilter evolution-rss freedesktop-sound-theme gdebi geoclue-hostip geoclue-localnet geoclue-manual geoclue-yahoo
gnome-accessibility gnome-games-extra-data gnome-office gnome-themes-more gnuchess-book hwdata libgpod-common libmono-i18n-west2.0-cil libtie-ixhash-perl libxml-xpath-perl
libxml-xpathengine-perl liferea nautilus-sendto-empathy network-manager-gnome python-chardet python-utidylib rarian-compat remmina-plugin-rdp remmina-plugin-vnc rpm2cpio
shotwell software-properties-gtk spamassassin telepathy-gabble telepathy-salut totem-coherence xnest xserver-xephyr
0 paquets mis à jour, 298 nouvellement installés, 0 à enlever et 0 non mis à jour.
Il est nécessaire de télécharger 311 Mo d'archives. Après dépaquetage, 848 Mo seront utilisés.
Voulez-vous continuer ? [Y/n/?]
).
