--- a/src/devices/wifi/mac-low.cc	Sun Mar 02 06:32:03 2008 +0100
+++ b/src/devices/wifi/mac-low.cc	Sun Mar 02 06:43:12 2008 +0100
@@ -238,9 +238,15 @@
 }
 
 MacLow::~MacLow ()
+{}
+
+void 
+MacLow::DoDispose (void)
 {
   CancelAllEvents ();
   m_phy = 0;
+  m_mac = 0;
+  m_stationManager = 0;
 }
 
 void