diff -upr gdm-2.19.3-pre/gui/gdmlanguages.c gdm-2.19.3-post/gui/gdmlanguages.c
--- gdm-2.19.3-pre/gui/gdmlanguages.c	2007-07-31 20:36:54.000000000 -0400
+++ gdm-2.19.3-post/gui/gdmlanguages.c	2007-07-31 20:43:55.000000000 -0400
@@ -840,6 +840,7 @@ gdm_lang_setup_treeview (void)
       GtkWidget *swindow;
       GtkWidget *label;
       char *s;
+      gint y_size;
 
       dialog = gtk_dialog_new_with_buttons (_("Select a Language"),
 #ifdef TODO
@@ -906,9 +907,13 @@ gdm_lang_setup_treeview (void)
       gtk_container_add (GTK_CONTAINER (swindow), tv);
       gtk_box_pack_start (GTK_BOX (main_vbox),
 			  swindow, TRUE, TRUE, 0);
+
+      /* Make the dialog fill 8/10 of the screen's height */
+      y_size = (8 * gdm_wm_screen.height) / 10;
+
       gtk_window_set_default_size (GTK_WINDOW (dialog),
 				   MIN (400, gdm_wm_screen.width),
-				   MIN (600, gdm_wm_screen.height));
+				   y_size);
       g_signal_connect (G_OBJECT (gtk_tree_view_get_selection (GTK_TREE_VIEW (tv))),
 			"changed",
 			(GCallback) selection_changed,