Index: src/gth-browser.c
===================================================================
RCS file: /cvs/gnome/gthumb/src/gth-browser.c,v
retrieving revision 1.61
diff -u -p -r1.61 gth-browser.c
--- src/gth-browser.c	17 Aug 2006 16:16:45 -0000	1.61
+++ src/gth-browser.c	16 Sep 2006 19:47:20 -0000
@@ -3078,8 +3078,13 @@ key_press_cb (GtkWidget   *widget, 
 		}
 	}
 
-	if ((event->state & GDK_CONTROL_MASK) || (event->state & GDK_MOD1_MASK))
-		return FALSE;
+	if (((event->state & GDK_CONTROL_MASK)
+
+		/* Let pass the ctrl+keypad_add and ctrl+keypad_subtract. */
+		&& (event->keyval != GDK_KP_Add) && (event->keyval != GDK_KP_Subtract)
+
+		) || (event->state & GDK_MOD1_MASK))
+			return FALSE;
 
 	sel_not_null = gth_file_view_selection_not_null (priv->file_list->view);
 	image_is_void = image_viewer_is_void (IMAGE_VIEWER (priv->viewer));
