jockey crashes after i make active nvidia driver (proprietary)

[malbo]

1) jaunty alpha5 or alpha6
2) Last update in synaptic :
Commit Log for Fri Mar 13 05:36:32 2009

Les paquets suivant ont été mis à jour :
alacarte (0.11.9-0ubuntu1) to 0.11.9-0ubuntu2
apparmor (2.3+1289-0ubuntu7) to 2.3+1289-0ubuntu8
apparmor-utils (2.3+1289-0ubuntu7) to 2.3+1289-0ubuntu8
bluetooth (4.30-0ubuntu1) to 4.32-0ubuntu1
bluez (4.30-0ubuntu1) to 4.32-0ubuntu1
bluez-alsa (4.30-0ubuntu1) to 4.32-0ubuntu1
bluez-cups (4.30-0ubuntu1) to 4.32-0ubuntu1
bluez-gstreamer (4.30-0ubuntu1) to 4.32-0ubuntu1
bluez-utils (4.30-0ubuntu1) to 4.32-0ubuntu1
desktop-file-utils (0.15-1ubuntu5) to 0.15-1ubuntu6
gnome-media (2.25.92-0ubuntu1) to 2.25.92-0ubuntu2
gnome-media-common (2.25.92-0ubuntu1) to 2.25.92-0ubuntu2
hal-cups-utils (0.6.19+git20090217-0ubuntu1) to 0.6.19+git20090217-0ubuntu2
libapparmor-perl (2.3+1289-0ubuntu7) to 2.3+1289-0ubuntu8
libapparmor1 (2.3+1289-0ubuntu7) to 2.3+1289-0ubuntu8
libbluetooth3 (4.30-0ubuntu1) to 4.32-0ubuntu1
libgnome-media0 (2.25.92-0ubuntu1) to 2.25.92-0ubuntu2
libxext6 (2:1.0.4-1) to 2:1.0.99.1-0ubuntu2
python-launchpad-bugs (0.3.4) to 0.3.5
totem (2.25.92-0ubuntu1) to 2.25.92-0ubuntu2
totem-common (2.25.92-0ubuntu1) to 2.25.92-0ubuntu2
totem-gstreamer (2.25.92-0ubuntu1) to 2.25.92-0ubuntu2
totem-mozilla (2.25.92-0ubuntu1) to 2.25.92-0ubuntu2
totem-plugins (2.25.92-0ubuntu1) to 2.25.92-0ubuntu2
xserver-xorg-video-ati (1:6.11.0-1ubuntu5) to 1:6.11.0+git20090310.945ccbbd-0ubuntu1
xserver-xorg-video-nv (1:2.1.12-1ubuntu1) to 1:2.1.12-1ubuntu2
xserver-xorg-video-radeon (1:6.11.0-1ubuntu5) to 1:6.11.0+git20090310.945ccbbd-0ubuntu1

3) and 4) i think that the problem may be resolved after restart of the PC ( because i just make activation of the nvidia driver)

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/share/jockey/jockey-backend
InterpreterPath: /usr/bin/python2.6
Lsusb:
 Bus 004 Device 002: ID 04f2:0111 Chicony Electronics Co., Ltd KU-9908 Keyboard
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: MEDIONPC
NonfreeKernelModules: nvidia
Package: jockey-common 0.5-0ubuntu3
PackageArchitecture: all
ProcAttrCurrent: unconfined
ProcCmdLine: root=UUID=1df26513-e49a-4431-a3a6-257950fd0124 ro quiet splash
ProcCmdline: /usr/bin/python /usr/share/jockey/jockey-backend --debug -l /var/log/jockey.log
ProcEnviron:

ProcVersionSignature: Ubuntu 2.6.28-9.31-generic
PythonArgs: ['/usr/share/jockey/jockey-backend', '--debug', '-l', '/var/log/jockey.log']
SourcePackage: jockey
Title: jockey-backend crashed with IOError: [Errno 19] No such device
Traceback: IOError: [Errno 19] No such device
UserGroups: