software update hangs Preparing to unpack .../debootstrap_1.0.59ubuntu0.3_all.deb ... Unpacking debootstrap (1.0.59ubuntu0.3) over (1.0.59ubuntu0.2) ...

Doing software update I get

Preparing to unpack .../debootstrap_1.0.59ubuntu0.3_all.deb ...
Unpacking debootstrap (1.0.59ubuntu0.3) over (1.0.59ubuntu0.2) ...
and it sits doing nothing.

My file backup tool hangs trying to read devices.tar.gz.dpkg-new
and I if I use cat devices.tar.gz.dpkg-new
it hangs

This file is 785 bytes

Description: Ubuntu 14.04.2 LTS
Release: 14.04

paice@paice-ThinkPad-W530:~$ apt-cache policy debootstrap
debootstrap:
  Installed: 1.0.59ubuntu0.2
  Candidate: 1.0.59ubuntu0.3
  Version table:
     1.0.59ubuntu0.3 0
        500 http://gb.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
 *** 1.0.59ubuntu0.2 0
        100 /var/lib/dpkg/status
     1.0.59 0
        500 http://gb.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: debootstrap 1.0.59ubuntu0.2
ProcVersionSignature: Ubuntu 3.13.0-52.86-generic 3.13.11-ckt18
Uname: Linux 3.13.0-52-generic x86_64
NonfreeKernelModules: symap_custom_dkms_x86_64
ApportVersion: 2.14.1-0ubuntu3.10
Architecture: amd64
CurrentDesktop: Unity
Date: Wed May 20 15:43:46 2015
InstallationDate: Installed on 2015-02-23 (85 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
SourcePackage: debootstrap
UpgradeStatus: No upgrade log present (probably fresh install)