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Question: Specs

The Canon specs indicate (http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=ModelFeaturesTabAct&fcategoryid=2544&modelid=17999&pageno=4) "You can shoot five 1024 x 768 still images per second".
Has anyone figured out how to set the camera to do this?
I find that the camera will only take on shot per push of the button, and will ignore any second push less than about two secondss after the first. Thus, I'm no where near that 5 shots/second.