Yeah, my last topic seems to have been deleted in which case the person who did, had no right to do so. I have looked at every topic regarding mouse problems and done everything I can possibly do otherwise I wouldn't be posting in here right now. So... again, I have no mouse button functions at all and nothing seems to work. I am using a Macbook Pro and a track pad, one button mouse with Leopard 10.5.5. I can't select anything and the options window doesn't register mouse input so I can't change the actual settings. Any information or suggestions would be much appreciated. I don't think I've missed any existing mouse related topics regarding Leopard. Thank you to all who post.