--- a/samples/main-random-topology.cc	Wed Mar 04 18:55:32 2009 +0100
+++ b/samples/main-random-topology.cc	Tue Mar 10 14:18:32 2009 +0100
@@ -29,7 +29,7 @@
                                  "X", StringValue ("100.0"),
                                  "Y", StringValue ("100.0"),
                                  "Rho", StringValue ("Uniform:0:30"));
-  mobility.SetMobilityModel ("ns3::StaticMobilityModel");
+  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
   mobility.Install (c);
 
   Config::Connect ("/NodeList/*/$ns3::MobilityModelNotifier/CourseChange",