diff -r 3b1da2848fc7 -r d3bac044e0f0 src/network/socket/qtcpserver.cpp
--- a/src/network/socket/qtcpserver.cpp	Fri Feb 19 23:40:16 2010 +0200
+++ b/src/network/socket/qtcpserver.cpp	Fri Mar 12 15:46:37 2010 +0200
@@ -513,6 +513,10 @@
     0 is returned if this function is called when there are no pending
     connections.
 
+    \note The returned QTcpSocket object cannot be used from another
+    thread. If you want to use an incoming connection from another thread,
+    you need to override incomingConnection().
+
     \sa hasPendingConnections()
 */
 QTcpSocket *QTcpServer::nextPendingConnection()
@@ -543,6 +547,11 @@
     may not be usable with native socket functions, and should only be
     used with QTcpSocket::setSocketDescriptor().
 
+    \note If you want to handle an incoming connection as a new QTcpSocket
+    object in another thread you have to pass the socketDescriptor
+    to the other thread and create the QTcpSocket object there and
+    use its setSocketDescriptor() method.
+
     \sa newConnection(), nextPendingConnection()
 */
 void QTcpServer::incomingConnection(int socketDescriptor)