So I think my problems are all with software. to try and fix my problems, I have updated to 1.0.2, reset all camera settings, changed lenses, and fully charged my battery. Problems: -To take a picture, I have to hit the shutter button twice, (The first hit, you hear the shutter, the second hit takes the picture). In live view, and auto modes, I only have to hit it once, though. -It will only auto-focus in video mode, and auto modes. Will not work in live view for other modes, or looking through the viewfinder in Manual modes. Can somebody please help me? Have any of you had these problems with a Canon? I will try to answer your questions to my best ability !