jockey-gtk crashed with DBusException in call_blocking()

When I use de Ubuntu 9.10 x86-64 liveCD, sometimes appears a dialog with a msg about jockey-gtk crashed.

ProblemType: Crash
Architecture: amd64
Date: Fri Oct 30 18:04:32 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/jockey-gtk
InterpreterPath: /usr/bin/python2.6
LiveMediaBuild: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MachineType: Dell Inc. Vostro1310
Package: jockey-gtk 0.5.5-0ubuntu2
PackageArchitecture: all
ProcCmdLine: BOOT_IMAGE=/casper/vmlinuz noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- locale=pt_BR console-setup/layoutcode?=br console-setup/modelcode?=abnt2
ProcCmdline: /usr/bin/python /usr/bin/jockey-gtk
ProcEnviron:
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
PythonArgs: ['/usr/bin/jockey-gtk']
SourcePackage: jockey
Title: jockey-gtk crashed with DBusException in call_blocking()
Uname: Linux 2.6.31-14-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 03/18/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A15
dmi.board.name: 0G930C
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnDellInc.:bvrA15:bd03/18/2009:svnDellInc.:pnVostro1310:pvrNull:rvnDellInc.:rn0G930C:rvr:cvnDellInc.:ct8:cvrN/A:
dmi.product.name: Vostro1310
dmi.product.version: Null
dmi.sys.vendor: Dell Inc.