I can reproduce this by running: $ software-center /tmp/google-chrome-beta_current_amd64.deb and installing/reinstalling it.
It appears that aptdaemon blocks while its investigating the deb and at the same time s-c is doing dbus calls to aptdaemon resulting in a blocking UI in s-c ** Also affects: aptdaemon (Ubuntu) Importance: Undecided Status: New ** Summary changed: - software-center crashed with DBusException in _convert_dbus_exception(): org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. + software-center crashed with DBusException in _convert_dbus_exception(): org.freedesktop.DBus.Error.NoReply: Did not receive a reply. aptdaemon does not respond in time. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/804444 Title: software-center crashed with DBusException in _convert_dbus_exception(): org.freedesktop.DBus.Error.NoReply: Did not receive a reply. aptdaemon does not respond in time. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/aptdaemon/+bug/804444/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs