QNetworkAccessManager freezes application on Symbian

After downloding one Request, the application freezes and cant be stopped using "open programs-> close" after switching to offline-mode.
Tests can be done with Qt HTTP-example found in examples/network/http. Start the application, download from http://qt.nokia.com (I didn't use https). The download should be successful. Now turn the phone to offline-mode (power-button -> offline). Switch back to the http-App and see that it is freezed and can't be stopped!