Bugzilla Not Starting After All Installation

[mkhurram92]

hello,
i am install Bugzilla 4.0.2 of Ubuntu 11.04. Everything is looking fine but when i access it in browser it is giving me something like this

#!/usr/bin/perl -wT
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Jacob Steenhagen <jake@bugzilla.org>
# Frédéric Buclin <LpSolit@gmail.com>

################################################## #############################
# Script Initialization
################################################## #############################

# Make it harder for us to do dangerous things in Perl.
use strict;

# Include the Bugzilla CGI and general utility library.
use lib qw(. lib);

Where problem may be
is there anyone who can guide me please ???