Code still showing up :(

Hi, I'm still having the same problem, the PHP code is sometimes not interpreted, but passed as text/plain to the browser. The MIME type is configured correctly, and once (in the master httpd.conf). I even recompiled Apache. The system: RedHat 6.2 (ancient, I know) with Apache 1.3.27 and PHP 4.2.3. My MIME type defs: AddType application/x-httpd-php .php .php4 .php3 .phtml .html AddType application/x-httpd-php-source .phps The module loads correctly, and no error is shown in the logs. The problem happens mainly with Horde/IMP (I'm using Horde's PEAR, BTW). I guess that everything started when Perl was upgraded from 5.6.0 to 5.8.0, but I can't see any connection. Any idea is appreciated. Thanks.