This is just a personal annoyance of mine with my magic mouse. When ever i use it and i start liking to use it again it does the exact thing that pisses me off. It will all of sudden when i pick it up or just move it. It will zoom into a web page from what ever gesture it thinks is zoom which i don't know what that gesture is as i can replicate it. Is there away to turn this off in magic prefs or better touch tool other than that i like the mouse. I just wish it was a little bigger for my hand though.