diff -Naur gnuplot-4.2.4/src/gplt_x11.c gnuplot-4.2.4-fix-format-errors/src/gplt_x11.c
--- gnuplot-4.2.4/src/gplt_x11.c	2008-06-22 19:08:49.000000000 -0400
+++ gnuplot-4.2.4-fix-format-errors/src/gplt_x11.c	2009-02-26 04:31:41.000000000 -0500
@@ -2880,22 +2880,22 @@
 
 		    case PseudoColor:
 			fprintf(stderr, ERROR_NOTICE("PseudoColor"));
-			fprintf(stderr, display_error_text_after);
+			fprintf(stderr, "%s", display_error_text_after);
 			break;
 
 		    case GrayScale:
 			fprintf(stderr, ERROR_NOTICE("GrayScale"));
-			fprintf(stderr, display_error_text_after);
+			fprintf(stderr, "%s", display_error_text_after);
 			break;
 
 		    case StaticColor:
 			fprintf(stderr, ERROR_NOTICE("StaticColor"));
-			fprintf(stderr, display_error_text_after);
+			fprintf(stderr, "%s", display_error_text_after);
 			break;
 
 		    case StaticGray:
 			fprintf(stderr, ERROR_NOTICE("StaticGray"));
-			fprintf(stderr, display_error_text_after);
+			fprintf(stderr, "%s", display_error_text_after);
 			break;
 
 		    case DirectColor:
diff -Naur gnuplot-4.2.4/term/post.trm gnuplot-4.2.4-fix-format-errors/term/post.trm
--- gnuplot-4.2.4/term/post.trm	2008-08-09 20:36:16.000000000 -0400
+++ gnuplot-4.2.4-fix-format-errors/term/post.trm	2009-02-26 04:28:25.000000000 -0500
@@ -1665,7 +1665,7 @@
 	    (ps_params->psformat == PSTERM_EPS ? 0.5 : 1.0)/PS_SC);
     if (ps_params->psformat == PSTERM_LANDSCAPE)
 	fprintf(gppsfile,"90 rotate\n0 %d translate\n", -(int)(term->ymax));
-    fprintf(gppsfile, psg1);
+    fprintf(gppsfile, "%s", psg1);
     if (ps_common_uses_fonts)
 	fprintf(gppsfile, "(%s) findfont %d scalefont setfont\n",
 		ps_params->font, (t->v_char));