I find it.
There is a bug in gnome3-team gnome-control-center package.
apt-cache policy gnome-control-center :
gnome-control-center:
Installé : 1:3.6.3-0ubuntu11~ubuntu12.10.1
Candidat : 1:3.6.3-0ubuntu11~ubuntu12.10.1
Table de version :
*** 1:3.6.3-0ubuntu11~ubuntu12.10.1 0
500 http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu/ quantal/main
amd64 Packages
100 /var/lib/dpkg/status
1:3.4.2-0ubuntu19 0
500 http://fr.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
I reinstall quantal version and no problems remaining.
** Changed in: ubuntu
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1137264
Title:
Appearance panel setting disappear
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