diff -ur a/config_gui.c b/config_gui.c
--- a/config_gui.c	2007-11-23 07:32:40.000000000 -0800
+++ b/config_gui.c	2008-04-13 16:53:14.000000000 -0700
@@ -141,7 +141,7 @@
     gtk_widget_show (alignment1);
     gtk_container_add (GTK_CONTAINER (eventbox1), alignment1);
 
-    wSc_Period_adj = gtk_adjustment_new (15, 1, 3600, 1, 1, 10);
+    wSc_Period_adj = gtk_adjustment_new (15, 1, 60*60*24, 1, 1, 10);
     wSc_Period = gtk_spin_button_new (GTK_ADJUSTMENT (wSc_Period_adj), 1, 0);
     gtk_widget_show (wSc_Period);
     gtk_container_add (GTK_CONTAINER (alignment1), wSc_Period);