--- a/src/network/socket/qtcpsocket.cpp	Wed Apr 21 12:15:23 2010 +0300
+++ b/src/network/socket/qtcpsocket.cpp	Wed Apr 21 20:15:53 2010 +0300
@@ -60,6 +60,16 @@
 
     \bold{Note:} TCP sockets cannot be opened in QIODevice::Unbuffered mode.
 
+    \section1 Symbian Platform Security Requirements
+
+    On Symbian, processes which use this class must have the
+    \c NetworkServices platform security capability. If the client
+    process lacks this capability, it will result in a panic.
+
+    Platform security capabilities are added via the
+    \l{qmake-variable-reference.html#target-capability}{TARGET.CAPABILITY}
+    qmake variable.
+
     \sa QTcpServer, QUdpSocket, QFtp, QNetworkAccessManager,
     {Fortune Server Example}, {Fortune Client Example},
     {Threaded Fortune Server Example}, {Blocking Fortune Client Example},