Index: terminal/terminal-screen.c
===================================================================
--- terminal/terminal-screen.c	(revision 27079)
+++ terminal/terminal-screen.c	(working copy)
@@ -145,6 +145,7 @@
   
   gboolean             activity;
   guint                reset_activity_cb;
+  time_t               last_size_change;
 };
 
 
@@ -873,6 +874,8 @@
 
   if (terminal_window_is_screen_active (screen))
     return;
+  if (time(NULL) - screen->last_size_change <= 1)
+    return;
 
   g_object_get (G_OBJECT (screen->preferences), "tab-activity-timeout", &timeout_seconds, NULL);
   if (timeout_seconds < 1.0)
@@ -952,6 +955,7 @@
         }
 #endif
     }
+    screen->last_size_change = time(NULL);
 
   GDK_THREADS_LEAVE ();