Applications using QMediaObject to play from HTTP URLs get in a state where it is not possible to play media from HTTP link

This has been seen using the Phonon MMF backend. Application can get in to a state where it is not possible to playback from an HTTP URL, even after a reboot. It happens after 16 attempts to play from an HTTP URL from the same application, so is not particularly common, but once the application is in that state I could not play via HTTP until I did a factory reset on the phone.