PHP 5 issue

I am in a middle of installing a Centreon Web front end for my nagios server. i keep running into one issue.
Component      Status
PHP Version 5.x      OK (ver 5.2.6-3ubuntu4.5)
PHP Extension       
   MySQL              OK
   GD                    Critical: gd.so not loaded in php.ini
   LDAP              OK
   XML Writer      OK
   MB String      OK
   PHP-POSIX      OK
   PEAR      OK
Writable Nagios Config Directory      OK

php5-gd is installed, this is running on a ubuntu Virtual machine, Any idea how to fix the GD error. Also here is the infor from phpinfo page.


System      Linux nagios-desktop 2.6.28-19-generic #61-Ubuntu SMP Wed May 26 23:35:15 UTC 2010 i686
Build Date      Jan 6 2010 21:56:40
Server API      Apache 2.0 Handler
Virtual Directory Support      disabled
Configuration File (php.ini) Path      /etc/php5/apache2
Loaded Configuration File      /etc/php5/apache2/php.ini
Scan this dir for additional .ini files      /etc/php5/apache2/conf.d
additional .ini files parsed      /etc/php5/apache2/conf.d/gd.ini, /etc/php5/apache2/conf.d/ldap.ini, /etc/php5/apache2/conf.d/mcrypt.ini, /etc/php5/apache2/conf.d/mssql.ini, /etc/php5/apache2/conf.d/mysql.ini, /etc/php5/apache2/conf.d/mysqli.ini, /etc/php5/apache2/conf.d/pdo.ini, /etc/php5/apache2/conf.d/pdo_dblib.ini, /etc/php5/apache2/conf.d/pdo_mysql.ini
PHP API      20041225
PHP Extension      20060613
Zend Extension      220060519
Debug Build      no
Thread Safety      disabled
Zend Memory Manager      enabled
IPv6 Support      enabled
Registered PHP Streams      zip, php, file, data, http, ftp, compress.bzip2, compress.zlib, https, ftps
Registered Stream Socket Transports      tcp, udp, unix, udg, ssl, sslv3, sslv2, tls
Registered Stream Filters      string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, convert.iconv.*, bzip2.*, zlib.*