Problem running php under Apache/Solaris

Hi, I am having trouble getting php-4.0.4pl1 working with apache-1.3.19 under Solaris 2.6 as a DSO. The compilation/installation of apache/php all seems to have gone fine - no compilation or linking problems and in /usr/local/apache/libexec I see: -rw-r--r-- 1 root other 7449 Apr 10 14:42 httpd.exp -rwxr-xr-x 1 root other 3000202 Apr 10 16:16 libphp4.so and /usr/local/apache/conf/http.conf has: ... LoadModule php4_module libexec/libphp4.so ... However when I try to start the httpd I get: [bin] /usr/local/apache/bin/apachectl start Syntax error on line 206 of /usr/local/apache/conf/httpd.conf: Cannot load /usr/local/apache/libexec/libphp4.so into server: ld.so.1: /usr/local/apache/bin/httpd: fatal: relocation error: file /usr/local/apache/libexec/libphp4.so: symbol ap_block_alarms: referenced symbol not found /usr/local/apache/bin/apachectl start: httpd could not be started ap_block_alarms seem to be a symbol defined in the httpd executable. Who knows what is going on here? Any help greatly appreciated. Uwe.