La mise à jour ce fait quand même.
j'ai trouvé ça[2013-01-04 09:55] Running 'pacman -Syu'
[2013-01-04 09:55] synchronizing package lists
[2013-01-04 09:55] starting full system upgrade
[2013-01-04 09:55] upgraded automake (1.12.6-1 -> 1.13.1-1)
[2013-01-04 09:55] upgraded cups-filters (1.0.28-1 -> 1.0.29-1)
[2013-01-04 09:55] upgraded galculator (2.0-1 -> 2.0.1-1)
[2013-01-04 09:55] upgraded gawk (4.0.1-1 -> 4.0.2-1)
[2013-01-04 09:55] upgraded gettext (0.18.1.1-4 -> 0.18.2-1)
[2013-01-04 09:55] upgraded gnutls (3.1.5-1 -> 3.1.6-1)
[2013-01-04 09:55]
[2013-01-04 09:55] (gconftool-2:1303): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
[2013-01-04 09:55] Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
[2013-01-04 09:55]
[2013-01-04 09:55] (gconftool-2:1309): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
[2013-01-04 09:55] Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
[2013-01-04 09:56] upgraded liferea (1.8.11-1 -> 1.8.12-1)
[2013-01-04 09:56] upgraded twisted (12.2.0-2 -> 12.3.0-1)
[2013-01-04 09:56] upgraded xf86-input-wacom (0.18.0-1 -> 0.19.0-1)
https://bbs.archlinux.org/viewtopic.php?pid=1187978
il y est dit que l'on peut re-installer les paquets impliqués --> ce que j'ai fait
où ignorer l'erreur--> You can safely ignore this "error".