--- ray/src/rt/rpict.c	1992/01/14 16:15:57	2.5
+++ ray/src/rt/rpict.c	1992/03/11 09:32:40	2.7
@@ -47,7 +47,7 @@ int  vspretest = 512;			/* virtual source pretest dens
 int  directinvis = 0;			/* sources invisible? */
 double  srcsizerat = .25;		/* maximum ratio source size/dist. */
 
-double  specthresh = .5;		/* specular sampling threshold */
+double  specthresh = .15;		/* specular sampling threshold */
 double  specjitter = 1.;		/* specular sampling jitter */
 
 int  maxdepth = 6;			/* maximum recursion depth */
@@ -233,6 +233,7 @@ char  *zfile, *oldfile;
 #endif
 	}
 						/* clean up */
+	signal(SIGALRM, SIG_IGN);
 	if (zfd != -1) {
 		if (write(zfd, (char *)zbar[0], hresolu*sizeof(float))
 				< hresolu*sizeof(float))