software-center crashed with TypeError in call_async()

[sophie]

Binary package hint: software-center

everytime i try and get sotware from software centre it gives me this problem with it saying it closed unexpectedly. ive tried using terminal also but when it asks for password i cant type my password in it just has a flashing cursor. im using net book

ProblemType: Crash
Architecture: i386
Date: Sun Jan 10 18:05:18 2010
DistroRelease: Ubuntu 10.04
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu-Netbook 10.04 "Lucid Lynx" - Alpha i386 (20100109)
InterpreterPath: /usr/bin/python2.6
Package: software-center 1.1.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-9.13-generic
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Tags: ubuntu-unr lucid
Title: software-center crashed with TypeError in call_async()
Uname: Linux 2.6.32-9-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[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 #499392, 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.