with vbshout on i get the follow results on my server, without it i get an average of about 0.3
PHP:
32410 hellbomb 0 16.0 0.3 /usr/bin/php /home/hellbomb/public_html/forum/ajax.php
32409 hellbomb 0 15.0 0.3 /usr/bin/php /home/hellbomb/public_html/forum/ajax.php
32416 hellbomb 0 14.0 0.3 /usr/bin/php /home/hellbomb/public_html/forum/ajax.php
32413 hellbomb 0 14.0 0.3 /usr/bin/php /home/hellbomb/public_html/forum/ajax.php