software-center crashed with DBusException in add_sources_list_entry(): org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)

[vfatelinux]

install flashplayer

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: software-center 5.1.4
ProcVersionSignature: Ubuntu 3.2.0-7.13-generic 3.2.0-rc7
Uname: Linux 3.2.0-7-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.90-0ubuntu1
Architecture: amd64
Date: Mon Jan 2 11:39:59 2012
DuplicateOf: https://bugs.launchpad.net/bugs/863027
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64+mac (20111230)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center apt:adobe-flashplugin?channel=$distro-partner
ProcEnviron:
 LANGUAGE=zh_CN:zh
 PATH=(custom, no user)
 LANG=zh_CN.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/software-center', 'apt:adobe-flashplugin?channel=$distro-partner']
SoftwareCenterLog:
 2012-01-02 11:33:53,752 - softwarecenter.ui.gtk3.em - INFO - EM's: 17 13 20
 2012-01-02 11:33:56,654 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file
 2012-01-02 11:33:57,058 - softwarecenter.ui.gtk3.utils - INFO - Softwarecenter style provider for ambiance Gtk theme: /usr/share/software-center/ui/gtk3/css/softwarecenter.css
 2012-01-02 11:34:13,726 - softwarecenter.ui.gtk3.app - INFO - software-center-agent finished with status 0
 2012-01-02 11:34:29,872 - softwarecenter.ui.gtk3.widgets.exhibits - WARNING - download failed: '<class 'gi._glib.GError'>', 'HTTP 错误：Connection terminated unexpectedly'
SourcePackage: software-center
Title: software-center crashed with DBusException in add_sources_list_entry(): org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)
UpgradeStatus: Upgraded to precise on 2012-01-01 (0 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #863027, 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.