Apache service not starting

While trying to install apache version 2.4.4 using the following method:

_{Source: http://zhuojun.info/?p=1121}

Before installing Apache 2.4.4, you should install PCRE, otherwise it will not succeed. The process of installing PCRE is simple. After you downloaded it, run in terminal next commands:

sudo ./configure
sudo make
sudo make install

Download APR and APR-Util from http://apr.apache.org, unpack them to Apache directory, /srclib/apr and /srclib/apr-util (no version numbers in the directory names) and type following commands to install Apache:

sudo ./configure --with-included-apr
sudo make
sudo make install

Type following command to start Apache:

sudo /usr/local/apache2/bin/apachectl start

There may be something wrongs like:

/usr/local/apache2/bin/httpd: error while loading shared libraries: libpcre.so.1: cannot open shared object file: No such file or directory

Type following command to see httpd’s shared library dependencies:

ldd httpd

Found "libpcre.so.1 => not found", then type the following command to update links:

sudo ldconfig

Restart Apache and should work.

Everything seemed fine but when I tried to start the apache service it gives error:

root@server1:/usr/local/apache2/bin# /etc/init.d/apache2 start
 * Starting web server apache2                                                  /usr/sbin/apache2: symbol lookup error: /usr/sbin/apache2: undefined symbol: apr_ldap_url_parse
Action 'start' failed.
The Apache error log may have more information.
                                                                         [fail]

I tried to install the apr again but nothing seems to work. Please help.

The Apache log shows something like this:

[Mon Jun 17 10:31:08 2013] [notice] Apache/2.2.22 (Ubuntu) PHP/5.3.10-1ubuntu3.6 with Suhosin-Patch configured -- resuming normal operations
[Mon Jun 17 11:48:20 2013] [notice] Apache/2.2.22 (Ubuntu) PHP/5.3.10-1ubuntu3.6 with Suhosin-Patch configured -- resuming normal operations
[Mon Jun 17 15:44:36 2013] [notice] Apache/2.2.22 (Ubuntu) PHP/5.3.10-1ubuntu3.6 with Suhosin-Patch configured -- resuming normal operations