Modules not working

Greetings! I have a problem. Some php modules (gd, imap, domxml and mbstring) are not working for me after a move to a new server. I get "Call to undefined function" errors in my scripts. The new server is RHEL (RedHat Enterprise Linux) 4 with PHP 4.3.9. The old one was RHEL 3 with PHP 4.3.2. The phpinfo() output of the new server says it has been compiled with those modules (--with-dom, --with-gd, etc.) but they are not listed along with the other ones (bcmath, bz2, etc.) My apache2 log says (many times): [error] an unknown filter was not added: PHP Also I notice there is a difference in the ouputs of phpinfo(). On 4.3.2 the Server API was Apache 2.0 Filter. On the new server it says: Apache 2.0 Handler. Can somebody help me shed a little light into that mystery. Or point me in some direction... Thank you. -- Jean-Philippe Côté * jpcote@ex-centris.com Terra Incognita 3530 Saint-Laurent, Bureau 500, Montréal (Québec) H2X 2V1 T: (514) 847-3536 #4567 * F: (514) 847-0966