I am unable to install anything using synaptic manager.I get the following error.

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After this operation, 0B of additional disk space will be used.
debconf: Perl may be unconfigured (Can't locate Debconf/Log.pm in @INC (@INC contains: /usr/local/lib/perl5/site_perl/5.12.2/i686-linux /usr/local/lib/perl5/site_perl/5.12.2 /usr/local/lib/perl5/5.12.2/i686-linux /usr/local/lib/perl5/5.12.2 .) at (eval 1) line 4.
BEGIN failed--compilation aborted at (eval 1) line 4.
) -- aborting
Setting up perl (5.10.1-8ubuntu2) ...
Can't locate Dpkg.pm in @INC (@INC contains: /usr/local/lib/perl5/site_perl/5.12.2/i686-linux /usr/local/lib/perl5/site_perl/5.12.2 /usr/local/lib/perl5/5.12.2/i686-linux /usr/local/lib/perl5/5.12.2 .) at /usr/sbin/update-alternatives line 26.
BEGIN failed--compilation aborted at /usr/sbin/update-alternatives line 26.
dpkg: error processing perl (--configure):
subprocess installed post-installation script returned error exit status 2
Setting up man-db (2.5.7-2) ...
Can't locate Debconf/Db.pm in @INC (@INC contains: /usr/local/lib/perl5/site_perl/5.12.2/i686-linux /usr/local/lib/perl5/site_perl/5.12.2 /usr/local/lib/perl5/5.12.2/i686-linux /usr/local/lib/perl5/5.12.2 .) at /usr/share/debconf/frontend line 6.
BEGIN failed--compilation aborted at /usr/share/debconf/frontend line 6.
dpkg: error processing man-db (--configure):
subprocess installed post-installation script returned error exit status 2
dpkg: dependency problems prevent configuration of libaudio-mixer-perl:
libaudio-mixer-perl depends on perl (>= 5.10.0-9); however:
Package perl is not configured yet.
dpkg: error processing libaudio-mixer-perl (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of libyaml-syck-perl:
libyaml-syck-perl depends on perl (>= 5.10.1-8ubuntu1); however:
Package perl is not configured yet.
dpkg: error processing libyaml-syck-perl (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problNo apport report written because the error message indicates its a followup error from a previous failure.
No apport report written because MaxReports is reached already
No apport report written because MaxReports is reached already
No apport report written because MaxReports is reached already
No apport report written because MaxReports is reached already
No apport report written because MaxReports is reached already
No apport report written because MaxReports is reached already
No apport report written because MaxReports is reached already
No apport report written because MaxReports is reached already
No apport report written because MaxReports is reached already
No apport report written because MaxReports is reached already
ems prevent configuration of libdate-manip-perl:
libdate-manip-perl depends on perl (>= 5.10); however:
Package perl is not configured yet.
libdate-manip-perl depends on libyaml-syck-perl; however:
Package libyaml-syck-perl is not configured yet.
dpkg: error processing libdate-manip-perl (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of libgnome2-wnck-perl:
libgnome2-wnck-perl depends on perl (>= 5.10.0-19ubuntu1); however:
Package perl is not configured yet.
dpkg: error processing libgnome2-wnck-perl (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of libgtk2-gladexml-perl:
libgtk2-gladexml-perl depends on perl (>= 5.10.0-19ubuntu1); however:
Package perl is not configured yet.
dpkg: error processing libgtk2-gladexml-perl (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of libgtk2-traymanager-perl:
libgtk2-traymanager-perl depends on perl (>= 5.10.0-19ubuntu1); however:
Package perl is not configured yet.
dpkg: error processing libgtk2-traymanager-perl (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of libperl-destruct-level-perl:
libperl-destruct-level-perl depends on perl (>= 5.10.0-19ubuntu1); however:
Package perl is not configured yet.
dpkg: error processing libperl-destruct-level-perl (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of libx11-freedesktop-desktopentry-perl:
libx11-freedesktop-desktopentry-perl depends on perl (>= 5.6.0-16); however:
Package perl is not configured yet.
dpkg: error processing libx11-freedesktop-desktopentry-perl (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of libxml-simple-perl:
libxml-simple-perl depends on perl; however:
Package perl is not configured yet.
dpkg: error processing libxml-simple-perl (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of perl-tk:
perl-tk depends on perl (>= 5.10.0-24ubuntu4); however:
Package perl is not configured yet.
dpkg: error processing perl-tk (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of perlpanel:
perlpanel depends on perl (>= 5.8.0); however:
Package perl is not configured yet.
perlpanel depends on libgnome2-wnck-perl; however:
Package libgnome2-wnck-perl is not configured yet.
perlpanel depends on libxml-simple-perl; however:
Package libxml-simple-perl is not configured yet.
perlpanel depends on libgtk2-gladexml-perl; however:
Package libgtk2-gladexml-perl is not configured yet.
perlpanel depends on libdate-manip-perl; however:
Package libdate-manip-perl is not configured yet.
perlpanel depends on libx11-freedesktop-desktopentry-perl; however:
Package libx11-freedesktop-desktopentry-perl is not configured yet.
dpkg: error processing perlpanel (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
perl
man-db
libaudio-mixer-perl
libyaml-syck-perl
libdate-manip-perl
libgnome2-wnck-perl
libgtk2-gladexml-perl
libgtk2-traymanager-perl
libperl-destruct-level-perl
libx11-freedesktop-desktopentry-perl
libxml-simple-perl
perl-tk
perlpanel
E: Sub-process /usr/bin/dpkg returned an error code (1)

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please help !!

Do you get the same error with?

Thanks.. I used this command and reinstalled the perl and it solved my problem!!!

That was not enough for me. I'm running a custom perl, whatever is latest on cpan.

Here is my script to update the custom compiled perl with whatever my installed ubuntu Deb stuff is in /usr/share/perl5:

#!/bin/bash

# change INC to have Ubuntu's deb/apt calls to custom perl use
# old perl's deb perl stuff

custom=$( env -i perl -V |\
sed -n -e '/^ *@INC/,${/usr\/local\/lib\/perl5\/5.*[0-9]$/p}' )

echo Custom perl is in $custom

pushd /usr/share/perl5 > /dev/null
for f in $( echo * )
do ls ${custom}/$f 2>/dev/null ||\
sudo ln -s /usr/share/perl5/$f ${custom}/$f
echo File or dir here\: $f
done

# not sure if we need to also do for /usr/local/lib/perl5/[older perl] stuff

popd > /dev/null