I'm using Ubuntu 11.10 and have installed GIMP last night. But today, my update manager is showing that your system has broken packages and dependencies. When I try to install the GIMP update that is available in the update manager, following error occurs.

The package system is broken

 The following packages have unmet dependencies:



 gimp: Depends: python-gtk2 (>= 2.8.0) but 2.24.0-2 is installed

       Depends: libc6 (>= 2.11) but 2.13-20ubuntu5 is installed

       Depends: libfontconfig1 (>= 2.8.0) but 2.8.0-3ubuntu2 is installed

       Depends: libgdk-pixbuf2.0-0 (>= 2.22.0) but 2.24.0-1ubuntu1 is installed

       Depends: libglib2.0-0 (>= 2.24.0) but 2.30.0-0ubuntu4 is installed

       Depends: libgtk2.0-0 (>= 2.20.0) but 2.24.6-0ubuntu5 is installed

       Depends: libjpeg62 (>= 6b1) but 6b1-1ubuntu2 is installed

       Depends: librsvg2-2 (>= 2.14.4) but 2.34.1-2 is installed

       Depends: zlib1g (>= 1:1.1.4) but 1:1.2.3.4.dfsg-3ubuntu3 is installed

       Depends: python (>= 2.7.1-0ubuntu2) but 2.7.2-7ubuntu2 is installed

Then I tried to run various commands from Terminal and following errors pop up.

randomhero@randomhero-Inspiron-N5010:~$ sudo apt-get install -f

[sudo] password for randomhero: 

Reading package lists... Done

Building dependency tree       

Reading state information... Done

Correcting dependencies... Done

The following extra packages will be installed:

  gimp

Suggested packages:

  gimp-help-en gimp-help libgimp-perl gimp-gap gimp-console

The following packages will be upgraded:

  gimp

1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

Need to get 0 B/4,388 kB of archives.

After this operation, 324 kB disk space will be freed.

Do you want to continue [Y/n]? y

(Reading database ... 213862 files and directories currently installed.)

Preparing to replace gimp 2.6.11-2ubuntu4 (using .../gimp_2.7.4-2011102201~oo_amd64.deb) ...

Unpacking replacement gimp ...

dpkg: error processing /var/cache/apt/archives/gimp_2.7.4-2011102201~oo_amd64.deb (--unpack):

 trying to overwrite '/usr/lib/gimp/2.0/plug-ins/file-xmc', which is also in package gimp-plugin-registry 3.5.4-1

dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)

Processing triggers for menu ...

Errors were encountered while processing:

 /var/cache/apt/archives/gimp_2.7.4-2011102201~oo_amd64.deb

E: Sub-process /usr/bin/dpkg returned an error code (1)

The Update Manager shows GIMP update under Other Updates(LP-PPA-matthaeus123-mrw-gimp-svn )
Is that official repository? Do I need to remove that repository? If yes, how?

Also the Ubuntu Software Center pops up error saying "Items cannot be installed or removed until package catalog is repaired."

When I click repair, it again gives me following error.

installArchives() failed: perl: warning: Setting locale failed.

perl: warning: Please check that your locale settings:

    LANGUAGE = (unset),

    LC_ALL = (unset),

    LANG = "en_IN.ISO8859-1"

    are supported and installed on your system.

perl: warning: Falling back to the standard locale ("C").

locale: Cannot set LC_CTYPE to default locale: No such file or directory

locale: Cannot set LC_MESSAGES to default locale: No such file or directory

locale: Cannot set LC_ALL to default locale: No such file or directory

p    erl: warning: Setting locale failed.

perl: warning: Please check that your locale settings:

    LANGUAGE = (unset),

    LC_ALL = (unset),

    LANG = "en_IN.ISO8859-1"

    are supported and installed on your system.

perl: warning: Falling back to the standard locale ("C").

locale: Cannot set LC_CTYPE to default locale: No such file or directory

locale: Cannot set LC_MESSAGES to default locale: No such file or directory

locale: Cannot set LC_ALL to default locale: No such file or directory

perl: warning: Setting locale failed.

perl: warning: Please check that your locale settings:

    LANGUAGE = (unset),

    LC_ALL = (unset),

    LANG = "en_IN.ISO8859-1"

    are supported and installed on your system.

perl: warning: Falling back to the standard locale ("C").

locale: Cannot set LC_CTYPE to default locale: No such file or directory

locale: Cannot set LC_MESSAGES to default locale: No such file or directory

locale: Cannot set LC_ALL to default locale: No such file or directory

(Reading database ... 

(Reading database ... 5%

(Reading database ... 10%

(Reading database ... 15%

(Reading database ... 20%

(Reading database ... 25%

(Reading database ... 30%

(Reading database ... 35%

(Reading database ... 40%

(Reading database ... 45%

(Reading database ... 50%

(Reading database ... 55%

(Reading database ... 60%

(Reading database ... 65%

(Reading database ... 70%

(Reading database ... 75%

(Reading database ... 80%

(Reading database ... 85%

(Reading database ... 90%

(Reading database ... 95%

(Reading database ... 100%

(Reading database ... 213862 files and directories currently installed.)

Preparing to replace gimp 2.6.11-2ubuntu4 (using .../gimp_2.7.4-2011102201~oo_amd64.deb) ...

Unpacking replacement gimp ...

dpkg: error processing /var/cache/apt/archives/gimp_2.7.4-2011102201~oo_amd64.deb (--unpack):

 trying to overwrite '/usr/lib/gimp/2.0/plug-ins/file-xmc', which is also in package gimp-plugin-registry 3.5.4-1

No apport report written because MaxReports is reached already

dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)

Processing triggers for menu ...

Errors were encountered while processing:

 /var/cache/apt/archives/gimp_2.7.4-2011102201~oo_amd64.deb

Error in function: 

SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)

I tried to remove gimp package with sudo apt-get remove gimp, but it shows following error.

randomhero@randomhero-Inspiron-N5010:~$ sudo apt-get remove gimp

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:

 gimp-gmic : Depends: gimp (>= 2.6) but it is not going to be installed

 gimp-paint-studio : Depends: gimp but it is not going to be installed

 gimp-plugin-registry : Depends: gimp (>= 2.6) but it is not going to be installed

E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

I don't know how to go ahead and fix this error. I need to install few applications, but I can't because of these errors. I don't want the GIMP software as such, I just installed just in case. But I want my Ubuntu Software Center to work.

Please help me, thanks in advance.