Dbus error: Method "set" with signature "s(ib)" on interface "org.gnome.gconf.database" doesn't exist

Oneiric i386 b1

i'm updating packages via synaptic, and each time i get logged:

GConf error: configuration server cant be met: D-BUS error: Method "Set" with signature "s(i(ias))" on interface "org.gnome.GConf.Database" doesn't exist

GConf error: configuration server cant be met: D-BUS error: Method "Set" with signature "s(ib)" on interface "org.gnome.GConf.Database" doesn't exist

Note: i'm not sure about which package to blame, so can be an other package and not gnome-python

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: python-gconf 2.28.1-3
ProcVersionSignature: Ubuntu 3.0.0-10.16-generic-pae 3.0.4
Uname: Linux 3.0.0-10-generic-pae i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Tue Sep 6 14:58:54 2011
ProcEnviron:
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-python
UpgradeStatus: No upgrade log present (probably fresh install)