update manager crashes on start

[RogerFC]

Binary package hint: update-manager

Just upgraded from 9.04 to 9.10.

Update manager, launched from menu, crashes before even starting.
I expected to open and check for updates.

ProblemType: Crash
Architecture: i386
Date: Tue Nov 3 10:35:28 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/update-manager
InterpreterPath: /usr/bin/python2.6
NonfreeKernelModules: nvidia
Package: update-manager 1:0.126.6
PackageArchitecture: all
ProcCmdline: /usr/bin/python2.6 /usr/bin/update-manager
ProcEnviron:
 LC_TIME=en_US_custom.UTF-8
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
PythonArgs: ['/usr/bin/update-manager']
SourcePackage: update-manager
Title: update-manager crashed with NameError in __init__()
Uname: Linux 2.6.31-14-generic i686
UserGroups: adm admin audio cdrom dialout dip floppy fuse lpadmin plugdev vboxusers video

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #473101, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.