diff -r cc75c76972ee -r c0432d11811c src/network/socket/qabstractsocket.cpp
--- a/src/network/socket/qabstractsocket.cpp	Wed Apr 21 12:15:23 2010 +0300
+++ b/src/network/socket/qabstractsocket.cpp	Wed Apr 21 20:15:53 2010 +0300
@@ -2382,6 +2382,10 @@
 #if defined(QABSTRACTSOCKET_DEBUG)
         qDebug("QAbstractSocket::disconnectFromHost() aborting immediately");
 #endif
+        if (d->state == HostLookupState) {
+            QHostInfo::abortHostLookup(d->hostLookupId);
+            d->hostLookupId = -1;
+        }
     } else {
         // Perhaps emit closing()
         if (d->state != ClosingState) {