software updater hangs while updating samba-common

[cedial]

software updater becomes unresponsive when attempting to update samba-common. This problem has occurred on both virtual and physical machines. The unresponsive software updater window becomes grayed and contains the message "Configuring samba-common".

Additional info:
cedial@U1404-Q1:~$ ubuntu-bug -w
cedial@U1404-Q1:~$ [12152:12201:0518/121730:ERROR:download.cc(109)] PostClientToServerMessage() failed during GetUpdates
[WARNING:flash/platform/pepper/pep_module.cpp(63)] SANDBOXED
ATTENTION: default value of option force_s3tc_enable overridden by environment.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: update-manager 1:0.196.12
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Aptdaemon: May 18 12:15:25 U1404-Q1 AptDaemon.Worker: INFO: Finished transaction /org/debian/apt/transaction/ab6ccc7731e5444394043cd119e219d1
Architecture: amd64
CurrentDesktop: Unity
Date: Sun May 18 12:16:39 2014
ExecutablePath: /usr/bin/update-manager
GsettingsChanges:
 b'com.ubuntu.update-manager' b'show-details' b'true'
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'window-width' b'484'
 b'com.ubuntu.update-manager' b'launch-time' b'1400429412'
InstallationDate: Installed on 2014-04-28 (19 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
InterpreterPath: /usr/bin/python3.4
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.