diff -r 2f2b67218332 src/devices/wifi/yans-wifi-phy.cc
--- a/src/devices/wifi/yans-wifi-phy.cc	Sun Sep 12 14:35:26 2010 +0200
+++ b/src/devices/wifi/yans-wifi-phy.cc	Tue Sep 14 17:16:30 2010 +1000
@@ -360,6 +360,7 @@
 
   NS_LOG_DEBUG("switching channel " << m_channelNumber << " -> " << nch);
   m_state->SwitchToChannelSwitching(m_channelSwitchDelay); 
+  m_interference.NotifyRxEnd();
   m_interference.EraseEvents(); 
   /*
    * Needed here to be able to correctly sensed the medium for the first