Laptop talking to me and image of rabbit appearing on screen in background

Is this a virus? For the last two weeks I have noticed if I leave the laptop on but idle  (at desktop) periodically a voice starts saying something. I can't catch the exact words. When I click on the screen a picture of a rabbit appears on the screen. It's only there for a few seconds. It looks a bit like the Duracell energiser bunny. I've run a live update and a quick scan but no errors are coming up. The bank phoned yesterday and apparently my credit card has been used for some on-line poker charges. Could these things be connected. Any suggestions?