--- Linux-PAM-0.78/modules/pam_exim/support.c   2001-09-23 15:49:52.000000000 +0200
+++ Linux-PAM-0.78-edit/modules/pam_exim/support.c      2005-08-19 00:28:13.379715720 +0200
@@ -406,6 +406,8 @@
        return PAM_AUTH_ERR;
     }

+    /* try to fix SIG_IGN POSIX problem under RH9 */
+    signal(SIGCHLD, SIG_DFL);
     /* fork */
     child = fork();
     if (child == 0) {
@@ -454,6 +456,7 @@
        retval = PAM_AUTH_ERR;
     }

+    signal(SIGCHLD, SIG_IGN);
     D(("returning %d", retval));
     return retval;
 }