Update Manager is broken

Asked by Kathy Kaskiw on 2014-04-13

From the Update Manager, when I click "Install Updates" a dialog appears with the following:

"The package system is broken

Check if you are using third party repositories. If so disable them, since they are a common source of problems.
Furthermore run the following command in a Terminal: apt-get install -f

Details
The following packages have unmet dependencies:

libssl1.0.0: Depends: libc6 (>= 2.14) but 2.15-0ubuntu10.3 is installed
             Depends: zlib1g (>= 1:1.1.4) but 1:1.2.3.4.dfsg-3ubuntu4 is installed
libssl1.0.0:i386: Depends: libc6 (>= 2.7) but 2.15-0ubuntu10.3 is installed
                  Depends: zlib1g (>= 1:1.1.4) but 1:1.2.3.4.dfsg-3ubuntu4 is installed"

As instructed in the error message, from Terminal I executed:
$ sudo apt-get install -f

[sudo] password for hello:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
  libssl1.0.0:i386
The following packages will be upgraded:
  libssl1.0.0:i386
1 upgraded, 0 newly installed, 0 to remove and 9 not upgraded.
2 not fully installed or removed.
Need to get 0 B/1,009 kB of archives.
After this operation, 4,096 B of additional disk space will be used.
Do you want to continue [Y/n]?
E: Internal Error, No file name for libssl1.0.0

Launching the Software Center results in the following dialog to appear:
"Items cannot be installed or removed until the paclage catalog is repaired. Do you want to repair it now?
Once Update Manager has finished the repairs, you can close it and return to the store."
Clicking "Repair" displays the following dialog:
"Package operation failed
The installation or removal of a software package failed.
Details
installArchives() failed: Error in function:
dpkg: error processing libssl1.0.0 (--configure):
 libssl1.0.0:amd64 1.0.1-4ubuntu5.6 cannot be configured because libssl1.0.0:i386 is in a different version (1.0.1-4ubuntu5.5)
dpkg: error processing libssl1.0.0:i386 (--configure):
 libssl1.0.0:i386 1.0.1-4ubuntu5.5 cannot be configured because libssl1.0.0:amd64 is in a different version (1.0.1-4ubuntu5.6)"

In an attempt at self-help, I read through other Launchpad entries and tried :
$ sudo apt-get autoclean

Reading package lists... Done
Building dependency tree
Reading state information... Done
hello@Qwerty:~$ sudo apt-get --purge autoremove
Reading package lists... Done
Building dependency tree... 50%
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
 libssl1.0.0 : Breaks: libssl1.0.0:i386 (!= 1.0.1-4ubuntu5.6) but 1.0.1-4ubuntu5.5 is installed
 libssl1.0.0:i386 : Breaks: libssl1.0.0 (!= 1.0.1-4ubuntu5.5) but 1.0.1-4ubuntu5.6 is installed
E: Unmet dependencies. Try using -f.

Questions:
1) I am running a 64 bit installation. Why is a "i386" library being referenced?
2) How do I tell who is referencing the libssl1.0.0 package?
3) The Update Manager error message suggests: "Check if you are using third party repositories. If so disable them...". As far as I know no third party repositories are used. Why doesn't it display entries that should be disabled?
4) Shouldn't the Software Center allow the removal of a package?

Kind regards,
John

Question information

Language:
English Edit question
Status:
Solved
For:
Ubuntu software-center Edit question
Assignee:
No assignee Edit question
Solved by:
Manfred Hampl
Solved:
2014-04-17
Last query:
2014-04-17
Last reply:
2014-04-17

This question was originally filed as bug #1307238.

Manfred Hampl (m-hampl) said : #1

I am converting that bug report into a question document, because that seems to me the better area for dealing with it.

Manfred Hampl (m-hampl) said : #2

As already written in the bug report, please open a terminal (e.g. by simultaneously pressing ctrl-alt-t) and issue the following commands:

uname -a
lsb_release -a
sudo dpkg --audit

and copy/paste all output into this questions doucment.
It is crucial that we see the current error messages from your system, and not those that John had on his system a year ago.

Kathy Kaskiw (kathy-kaskiw) said : #3

Thanks Manfred, this is what I got ...

kathy@kathy-laptop:~$ uname -a
Linux kathy-laptop 3.2.0-53-generic-pae #81-Ubuntu SMP Thu Aug 22
21:23:47 UTC 2013 i686 i686 i386 GNU/Linux
kathy@kathy-laptop:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.3 LTS
Release: 12.04
Codename: precise
kathy@kathy-laptop:~$ sudo dpkg --audit
[sudo] password for kathy:
The following packages have been unpacked but not yet configured.
They must be configured using dpkg --configure or the configure
menu option in dselect for them to work:
  acroread Adobe Reader

kathy@kathy-laptop:~$

On 14-04-14 10:06 AM, Manfred Hampl wrote:
> Your question #246982 on software-center in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/software-center/+question/246982
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> As already written in the bug report, please open a terminal (e.g. by
> simultaneously pressing ctrl-alt-t) and issue the following commands:
>
> uname -a
> lsb_release -a
> sudo dpkg --audit
>
> and copy/paste all output into this questions doucment.
> It is crucial that we see the current error messages from your system, and not those that John had on his system a year ago.
>

You will see i386 as not all applications arree 64bit. If you install Skype for example then you will haul in a tonne of 32bit packages as dependencies. Wine does similar. T
Your OS is multiarch so can run 32bit applications just as you can in 64bit versions of Windows

What is the output of :

apt-cache policy libssl1.0.0

Thanks

Manfred Hampl (m-hampl) said : #6

The output of "dpkg --audit" does NOT show any problem with libssl1.0.0, but a problem with acroread.

Please provide the output of the following terminal commands

sudo dpkg --configure -a
sudo apt-get update
sudo apt-get dist-upgrade

then copy/paste all output into this question document that we can check.

Kathy Kaskiw (kathy-kaskiw) said : #7

Hi Manfred ... here's the output. KK

kathy@kathy-laptop:~$ sudo dpkg --configure -a
[sudo] password for kathy:
Sorry, try again.
[sudo] password for kathy:
dpkg: dependency problems prevent configuration of acroread:
  acroread depends on acroread-bin; however:
   Package acroread-bin is not installed.
dpkg: error processing acroread (--configure):
  dependency problems - leaving unconfigured
Errors were encountered while processing:
  acroread
kathy@kathy-laptop:~$ sudo apt-get update
Get:1 http://security.ubuntu.com precise-security Release.gpg [198 B]
Get:2 http://security.ubuntu.com precise-security Release [49.6 kB]
Hit http://ca.archive.ubuntu.com precise Release.gpg
Get:3 http://ca.archive.ubuntu.com precise-updates Release.gpg [198 B]
Hit http://archive.canonical.com precise Release.gpg
Hit http://ca.archive.ubuntu.com precise Release
Hit http://archive.canonical.com precise Release
Get:4 http://ca.archive.ubuntu.com precise-updates Release [49.6 kB]
Get:5 http://security.ubuntu.com precise-security/restricted Sources
[2,494 B]
Get:6 http://security.ubuntu.com precise-security/main Sources [101 kB]
Hit http://archive.canonical.com precise/partner i386 Packages
Get:7 http://security.ubuntu.com precise-security/universe Sources [30.9
kB]
Ign http://archive.canonical.com precise/partner TranslationIndex
Hit http://ca.archive.ubuntu.com precise/restricted Sources
Hit http://ca.archive.ubuntu.com precise/main Sources
Hit http://ca.archive.ubuntu.com precise/universe Sources
Hit http://ca.archive.ubuntu.com precise/multiverse Sources
Hit http://ca.archive.ubuntu.com precise/restricted i386 Packages
Hit http://ca.archive.ubuntu.com precise/main i386 Packages
Hit http://ca.archive.ubuntu.com precise/universe i386 Packages
Hit http://ca.archive.ubuntu.com precise/multiverse i386 Packages
Hit http://ca.archive.ubuntu.com precise/main TranslationIndex
Hit http://ca.archive.ubuntu.com precise/multiverse TranslationIndex
Get:8 http://security.ubuntu.com precise-security/multiverse Sources
[1,797 B]
Get:9 http://security.ubuntu.com precise-security/restricted i386
Packages [4,620 B]
Get:10 http://security.ubuntu.com precise-security/main i386 Packages
[402 kB]
Hit http://ca.archive.ubuntu.com precise/restricted TranslationIndex
Hit http://ca.archive.ubuntu.com precise/universe TranslationIndex
Get:11 http://ca.archive.ubuntu.com precise-updates/restricted Sources
[8,028 B]
Get:12 http://ca.archive.ubuntu.com precise-updates/main Sources [454 kB]
Get:13 http://security.ubuntu.com precise-security/universe i386
Packages [96.5 kB]
Get:14 http://security.ubuntu.com precise-security/multiverse i386
Packages [2,649 B]
Get:15 http://security.ubuntu.com precise-security/main TranslationIndex
[74 B]
Get:16 http://security.ubuntu.com precise-security/multiverse
TranslationIndex [72 B]
Get:17 http://security.ubuntu.com precise-security/restricted
TranslationIndex [72 B]
Get:18 http://security.ubuntu.com precise-security/universe
TranslationIndex [73 B]
Hit http://security.ubuntu.com precise-security/main Translation-en
Hit http://security.ubuntu.com precise-security/multiverse Translation-en
Hit http://security.ubuntu.com precise-security/restricted Translation-en
Hit http://security.ubuntu.com precise-security/universe Translation-en
Get:19 http://ca.archive.ubuntu.com precise-updates/universe Sources
[106 kB]
Get:20 http://ca.archive.ubuntu.com precise-updates/multiverse Sources
[8,909 B]
Get:21 http://ca.archive.ubuntu.com precise-updates/restricted i386
Packages [12.2 kB]
Get:22 http://ca.archive.ubuntu.com precise-updates/main i386 Packages
[789 kB]
Ign http://archive.canonical.com precise/partner Translation-en_CA
Ign http://archive.canonical.com precise/partner Translation-en
Get:23 http://ca.archive.ubuntu.com precise-updates/universe i386
Packages [244 kB]
Get:24 http://ca.archive.ubuntu.com precise-updates/multiverse i386
Packages [15.4 kB]
Get:25 http://ca.archive.ubuntu.com precise-updates/main
TranslationIndex [3,564 B]
Get:26 http://ca.archive.ubuntu.com precise-updates/multiverse
TranslationIndex [2,605 B]
Get:27 http://ca.archive.ubuntu.com precise-updates/restricted
TranslationIndex [2,461 B]
Get:28 http://ca.archive.ubuntu.com precise-updates/universe
TranslationIndex [2,850 B]
Hit http://ca.archive.ubuntu.com precise/main Translation-en_CA
Hit http://ca.archive.ubuntu.com precise/main Translation-en
Hit http://ca.archive.ubuntu.com precise/multiverse Translation-en
Hit http://ca.archive.ubuntu.com precise/restricted Translation-en
Hit http://ca.archive.ubuntu.com precise/universe Translation-en_CA
Hit http://ca.archive.ubuntu.com precise/universe Translation-en
Hit http://ca.archive.ubuntu.com precise-updates/main Translation-en_CA
Get:29 http://ca.archive.ubuntu.com precise-updates/main Translation-en
[341 kB]
Hit http://ca.archive.ubuntu.com precise-updates/multiverse Translation-en
Hit http://ca.archive.ubuntu.com precise-updates/restricted Translation-en
Hit http://ca.archive.ubuntu.com precise-updates/universe Translation-en_CA
Hit http://ca.archive.ubuntu.com precise-updates/universe Translation-en
Fetched 2,733 kB in 2s (936 kB/s)
Reading package lists... Done
kathy@kathy-laptop:~$ sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
  acroread : Depends: acroread-bin but it is not installed
E: Unmet dependencies. Try using -f.
kathy@kathy-laptop:~$

On 14-04-15 01:51 AM, Manfred Hampl wrote:
> Your question #246982 on software-center in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/software-center/+question/246982
>
> Manfred Hampl requested more information:
> The output of "dpkg --audit" does NOT show any problem with libssl1.0.0,
> but a problem with acroread.
>
> Please provide the output of the following terminal commands
>
> sudo dpkg --configure -a
> sudo apt-get update
> sudo apt-get dist-upgrade
>
> then copy/paste all output into this question document that we can
> check.
>

Manfred Hampl (m-hampl) said : #8

Ok, what is the output of

apt-cache policy acroread acroread-bin
sudo apt-get install -f

Kathy Kaskiw (kathy-kaskiw) said : #9

Hi Manfred, here's the output, I said 'y' on the request to continue.
Hope that was the right thing to do. KK

kathy@kathy-laptop:~$ apt-cache policy acroread acroread-bin
acroread:
   Installed: 9.5.5-1precise1
   Candidate: 9.5.5-1precise1
   Version table:
  *** 9.5.5-1precise1 0
         500 http://archive.canonical.com/ubuntu/ precise/partner i386
Packages
         100 /var/lib/dpkg/status
acroread-bin:
   Installed: (none)
   Candidate: 9.5.5-1precise1
   Version table:
      9.5.5-1precise1 0
         500 http://archive.canonical.com/ubuntu/ precise/partner i386
Packages
kathy@kathy-laptop:~$ sudo apt-get install -f
[sudo] password for kathy:

Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer
required:
   thunderbird-globalmenu linux-headers-3.2.0-38-generic-pae
   linux-headers-3.2.0-38 linux-headers-3.2.0-48
linux-headers-3.2.0-48-generic
   firefox-globalmenu linux-headers-3.2.0-48-generic-pae
   linux-headers-3.2.0-38-generic
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
   acroread-bin
Suggested packages:
   libldap2 libgnome-speech7
The following NEW packages will be installed:
   acroread-bin
0 upgraded, 1 newly installed, 0 to remove and 335 not upgraded.
1 not fully installed or removed.
Need to get 0 B/60.1 MB of archives.
After this operation, 142 MB of additional disk space will be used.
Do you want to continue [Y/n]? y
(Reading database ... 588486 files and directories currently installed.)
Unpacking acroread-bin (from .../acroread-bin_9.5.5-1precise1_i386.deb) ...
dpkg: error processing
/var/cache/apt/archives/acroread-bin_9.5.5-1precise1_i386.deb (--unpack):
  trying to overwrite
'/opt/Adobe/Reader9/Reader/intellinux/mozilla/prefs.js', which is also
in package adobereader-enu 9.3.4
No apport report written because MaxReports is reached already
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
  /var/cache/apt/archives/acroread-bin_9.5.5-1precise1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
kathy@kathy-laptop:~$

On 14-04-15 08:26 AM, Manfred Hampl wrote:
> Your question #246982 on software-center in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/software-center/+question/246982
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> Ok, what is the output of
>
> apt-cache policy acroread acroread-bin
> sudo apt-get install -f
>

Manfred Hampl (m-hampl) said : #10

Aparently you have an older version of the adobe reader program installed from some other source, and now the package management system sees a conflict between the old and the current packages. Manually uninstalling the older one should solve the problem. To check the details please provide the output of the following terminal commands:

dpkg -l | grep adobe
dpkg -l | grep acro

Kathy Kaskiw (kathy-kaskiw) said : #11

Hi Mafred ... here's the output from the commands below. KK

kathy@kathy-laptop:~$ dpkg -l | grep adobe
ii adobe-flash-properties-gtk
11.2.202.310-0precise1 GTK+ control panel for
Adobe Flash Player plugin version 11
ii adobe-flashplugin 11.2.202.310-0precise1
Adobe Flash Player plugin version 11
ii adobereader-enu 9.3.4
Adobe Reader allows you to view navigate and print PDF files. This
version adds advanced forms support (save), better integration with
Adobe Acrobat workflows, customizable toolbars and better overall
performance.
ii cmap-adobe-japan1 0+20090930-2
CMaps for Adobe-Japan1
ii cmap-adobe-japan2 0+20090930-2
CMaps for Adobe-Japan2
kathy@kathy-laptop:~$ dpkg -l | grep acro
iU acroread 9.5.5-1precise1 Adobe Reader
ii anacron 2.3-14ubuntu1 cron-like
program that doesn't go by time
kathy@kathy-laptop:~$

On 14-04-16 01:46 AM, Manfred Hampl wrote:
> Your question #246982 on software-center in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/software-center/+question/246982
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> Aparently you have an older version of the adobe reader program
> installed from some other source, and now the package management system
> sees a conflict between the old and the current packages. Manually
> uninstalling the older one should solve the problem. To check the
> details please provide the output of the following terminal commands:
>
> dpkg -l | grep adobe
> dpkg -l | grep acro
>

Manfred Hampl (m-hampl) said : #12

Try

sudo apt-get purge adobereader-enu
sudo apt-get install -f

and copy/paste all output as done before.

Kathy Kaskiw (kathy-kaskiw) said : #13

Hi Manfred ... here's the latest output. KK

kathy@kathy-laptop:~$ sudo apt-get purge adobereader-enu
[sudo] password for kathy:
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
  acroread : Depends: acroread-bin but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or
specify a solution).
kathy@kathy-laptop:~$ sudo apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer
required:
   thunderbird-globalmenu linux-headers-3.2.0-38-generic-pae
   linux-headers-3.2.0-38 linux-headers-3.2.0-48
linux-headers-3.2.0-48-generic
   firefox-globalmenu linux-headers-3.2.0-48-generic-pae
   linux-headers-3.2.0-38-generic
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
   acroread-bin
Suggested packages:
   libldap2 libgnome-speech7
The following NEW packages will be installed:
   acroread-bin
0 upgraded, 1 newly installed, 0 to remove and 336 not upgraded.
1 not fully installed or removed.
Need to get 0 B/60.1 MB of archives.
After this operation, 142 MB of additional disk space will be used.
Do you want to continue [Y/n]? y
(Reading database ... 588486 files and directories currently installed.)
Unpacking acroread-bin (from .../acroread-bin_9.5.5-1precise1_i386.deb) ...
dpkg: error processing
/var/cache/apt/archives/acroread-bin_9.5.5-1precise1_i386.deb (--unpack):
  trying to overwrite
'/opt/Adobe/Reader9/Reader/intellinux/mozilla/prefs.js', which is also
in package adobereader-enu 9.3.4
No apport report written because MaxReports is reached already
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
  /var/cache/apt/archives/acroread-bin_9.5.5-1precise1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
kathy@kathy-laptop:~$

On 14-04-16 09:21 AM, Manfred Hampl wrote:
> Your question #246982 on software-center in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/software-center/+question/246982
>
> Status: Open => Answered
>
> Manfred Hampl proposed the following answer:
> Try
>
> sudo apt-get purge adobereader-enu
> sudo apt-get install -f
>
> and copy/paste all output as done before.
>

Manfred Hampl (m-hampl) said : #14

Try

sudo dpkg --purge adobereader-enu
sudo apt-get install -f

and copy/paste all output as done before.

Kathy Kaskiw (kathy-kaskiw) said : #15

Hi Manfred ... please see output below. Thanks, KK

kathy@kathy-laptop:~$ sudo dpkg --purge adobereader-enu
[sudo] password for kathy:
(Reading database ... 588485 files and directories currently installed.)
Removing adobereader-enu ...
Processing triggers for man-db ...
kathy@kathy-laptop:~$ sudo apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer
required:
   thunderbird-globalmenu linux-headers-3.2.0-38-generic-pae
   linux-headers-3.2.0-38 linux-headers-3.2.0-48
linux-headers-3.2.0-48-generic
   firefox-globalmenu linux-headers-3.2.0-48-generic-pae
   linux-headers-3.2.0-38-generic
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
   acroread-bin
Suggested packages:
   libldap2 libgnome-speech7
The following NEW packages will be installed:
   acroread-bin
0 upgraded, 1 newly installed, 0 to remove and 336 not upgraded.
1 not fully installed or removed.
Need to get 0 B/60.1 MB of archives.
After this operation, 142 MB of additional disk space will be used.
Do you want to continue [Y/n]? y
(Reading database ... 588097 files and directories currently installed.)
Unpacking acroread-bin (from .../acroread-bin_9.5.5-1precise1_i386.deb) ...
Processing triggers for man-db ...
Processing triggers for bamfdaemon ...
Rebuilding /usr/share/applications/bamf.index...
Processing triggers for desktop-file-utils ...
Processing triggers for gnome-menus ...
Setting up acroread-bin (9.5.5-1precise1) ...
Setting up acroread (9.5.5-1precise1) ...
No LSB modules are available.
No LSB modules are available.
kathy@kathy-laptop:~$ sudo apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer
required:
   thunderbird-globalmenu linux-headers-3.2.0-38-generic-pae
   linux-headers-3.2.0-38 linux-headers-3.2.0-48
linux-headers-3.2.0-48-generic
   firefox-globalmenu linux-headers-3.2.0-48-generic-pae
   linux-headers-3.2.0-38-generic
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 336 not upgraded.
kathy@kathy-laptop:~$

On 14-04-17 01:36 AM, Manfred Hampl wrote:
> Your question #246982 on software-center in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/software-center/+question/246982
>
> Status: Open => Answered
>
> Manfred Hampl proposed the following answer:
> Try
>
> sudo dpkg --purge adobereader-enu
> sudo apt-get install -f
>
> and copy/paste all output as done before.
>

Manfred Hampl (m-hampl) said : #16

The output looks good, the two acreread packages are installed and no error messages shown any more.

Now you should try updating the packages in your system to the current status.

You can do that either by starting update-manager (that will show a list of packages where updates are waiting), or you can do that from the terminal with the commands
sudo apt-get update
sudo apt-get dist-upgrade

You can also do a cleanup action by issuing the terminal command
sudo apt-get --purge autoremove
to remove some packages that are not needed any more.

If you experience any problem during that activity please post as much information as possible.

Kathy Kaskiw (kathy-kaskiw) said : #17

Hi Manfred,

THANK YOU!!!!

My system is now running perfectly and everything is updated and cleaned
up. I am so grateful for your expert assistance and your incredible
patience. I've been nervous about sticking with an Ubuntu platform
since the tech-savy colleague who got me set-up, moved away and then I
had a problem that wouldn't go away. I had no idea how to find
'terminal' much less provide the commands that would fix the problem.
Thank you again.

Just one more question ... how do I find out what version of Linux I'm
using?

KK

On 14-04-17 06:21 AM, Manfred Hampl wrote:
> Your question #246982 on software-center in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/software-center/+question/246982
>
> Status: Open => Answered
>
> Manfred Hampl proposed the following answer:
> The output looks good, the two acreread packages are installed and no
> error messages shown any more.
>
> Now you should try updating the packages in your system to the current
> status.
>
> You can do that either by starting update-manager (that will show a list of packages where updates are waiting), or you can do that from the terminal with the commands
> sudo apt-get update
> sudo apt-get dist-upgrade
>
> You can also do a cleanup action by issuing the terminal command
> sudo apt-get --purge autoremove
> to remove some packages that are not needed any more.
>
> If you experience any problem during that activity please post as much
> information as possible.
>

Best Manfred Hampl (m-hampl) said : #18

see https://help.ubuntu.com/community/CheckingYourUbuntuVersion

Based on the output that you provided during the activities to get your problem solved, I am quite sure that you are running an Ubuntu 12.04 LTS (Precise Pangolin) system (the sub-release will most probably be 12.04.4, eventually 12.04.3)

This Ubuntu release will be supported for three more years (April 2017).
The newest release 14.04 LTS (Trusty Tahr) is due to be officially published this week.
You can upgrade from your current version to the newest one, but I recommend to be a bit patient with doing so.
Unless you need some cutting-edge features provided by the new release, you should stay on your supported older release for the time being. It is recommended to wait for the first sub-release (14.04.1, scheduled for July 2014) to upgrade from 12.04 to 14.04.

If your problem finally has been resolved und your system is running well, please do not forget to mark this question thread as 'solved'.

Kathy Kaskiw (kathy-kaskiw) said : #19

This has definitely solved my problem. Thank you very much Manfred!

Kathy