--- amavisd	2004-09-23 13:29:04.000000000 +0100
+++ amavisd-spamassassin3	2004-09-23 13:28:38.713271565 +0100
@@ -10199,7 +10199,7 @@
     local_tests_only  => $sa_local_tests_only,
     home_dir_for_helpers => $helpers_home,
     stop_at_threshold => 0,
-#   DEF_RULES_DIR     => '/usr/local/share/spamassassin',
+    DEF_RULES_DIR     => ((-e '/usr/share/spamassassin/core') ? '/usr/share/spamassassin/core' : '/usr/share/spamassassin'), 
 #   LOCAL_RULES_DIR   => '/etc/mail/spamassassin',
 #see man Mail::SpamAssassin for other options
   });