Today my MA 2MD started flickering. Coincidentally my Windows 3D XP Screensaver wouldn't even load for more than 1 second. They worked fine yesterday.
All I'd done today was add the free MusicMatch 10 player.
Once uninstalled all went back to working as it should.
I've no idea how a media player would interfere with Screensavers especially when it wasn't in use at the time. I had at first thought that my video card needed new drivers, they are up to date, or my DirectX was up the creek, no, it's fine too.
If this helps someone, then you're welcome!