Hi! newbie here... OS--------Centos 5.1 php-------php-5.1.6-15.el5 gd--------2..0..33-9.3.fc6 drupal----5.5

I bring the site up,administer, gives a warning "drupal has problems check status", go to status and I get the error: gl is either not installed or outdated. Everything is up to spec...php is calling gd.so and it is there in /usr/lib64/php/modules/ right where it's supposed to be and I can't figure out why I am getting this msg...all help be appreciated for sure

thx rado