--- ray/src/rt/rtmain.c	2006/02/05 22:22:20	2.13
+++ ray/src/rt/rtmain.c	2008/04/18 18:06:29	2.16
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: rtmain.c,v 2.13 2006/02/05 22:22:20 greg Exp $";
+static const char	RCSid[] = "$Id: rtmain.c,v 2.16 2008/04/18 18:06:29 greg Exp $";
 #endif
 /*
  *  rtmain.c - main for rtrace per-ray calculation program
@@ -227,8 +227,13 @@ main(int  argc, char  *argv[])
 					/* initialize object types */
 	initotypes();
 					/* initialize urand */
-	initurand(2048);
-	srandom(rand_samp ? (long)time(0) : 0L);
+	if (rand_samp) {
+		srandom((long)time(0));
+		initurand(0);
+	} else {
+		srandom(0L);
+		initurand(2048);
+	}
 					/* set up signal handling */
 	sigdie(SIGINT, "Interrupt");
 #ifdef SIGHUP
@@ -304,10 +309,11 @@ main(int  argc, char  *argv[])
 			while ((rval=fork()) == 0) {	/* keep on forkin' */
 				pflock(1);
 				pfhold();
+				ambsync();		/* load new values */
 			}
 			if (rval < 0)
 				error(SYSTEM, "cannot fork child for persist function");
-			pfdetach();		/* parent exits */
+			pfdetach();		/* parent will run then exit */
 		}
 	}
 runagain:
@@ -420,8 +426,8 @@ printdefaults(void)			/* print default values to stdou
 
 	if (imm_irrad)
 		printf("-I+\t\t\t\t# immediate irradiance on\n");
-	printf("-x  %-9d\t\t\t# x resolution (flush interval)\n", hresolu);
-	printf("-y  %-9d\t\t\t# y resolution\n", vresolu);
+	printf("-x %-9d\t\t\t# x resolution (flush interval)\n", hresolu);
+	printf("-y %-9d\t\t\t# y resolution\n", vresolu);
 	printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" :
 			"-ld-\t\t\t\t# limit distance off\n");
 	printf("-h%c\t\t\t\t# %s header\n", loadflags & IO_INFO ? '+' : '-',