diff --git a/csharp/src/Ice/ConnectionI.cs b/csharp/src/Ice/ConnectionI.cs
index 56efa21..e8d355a 100644
--- a/csharp/src/Ice/ConnectionI.cs
+++ b/csharp/src/Ice/ConnectionI.cs
@@ -1451,6 +1451,7 @@ namespace Ice
             _writeStream.getBuffer().clear();
             _readStream.clear();
             _readStream.getBuffer().clear();
+            _incomingCache = null;
 
             if(_callback != null)
             {
diff --git a/csharp/src/Ice/StreamSocket.cs b/csharp/src/Ice/StreamSocket.cs
index d492cae..0e42741 100644
--- a/csharp/src/Ice/StreamSocket.cs
+++ b/csharp/src/Ice/StreamSocket.cs
@@ -231,6 +231,7 @@ namespace IceInternal
                     throw new SocketException((int)_readEventArgs.SocketError);
                 }
                 int ret = _readEventArgs.BytesTransferred;
+                _readEventArgs.SetBuffer(null, 0, 0);
 #else
                 int ret = _fd.EndReceive(_readResult);
                 _readResult = null;
@@ -355,6 +356,7 @@ namespace IceInternal
                     throw new SocketException((int)_writeEventArgs.SocketError);
                 }
                 int ret = _writeEventArgs.BytesTransferred;
+                _writeEventArgs.SetBuffer(null, 0, 0);
 #else
                 int ret = _fd.EndSend(_writeResult);
                 _writeResult = null;