How to file a bug? Let me know if you can reproduce this: 1. Change gesture of magic mouse in preference to this: (1) swipe between pages: change to one or two fingers (2) switch between full-screen apps: uncheck. 2. change gesture of trackpad in preference to this: (1) swipe between pages: with two fingers or three fingers. (2) swipe between full-screen apps: (should be automatically changed) four fingers. The reason I am changing these gestures is because this is the only way to get the back/forward gesture back in Finder or any browser. Now here comes the bug: Open iPhoto, click a photo, try to swipe your fingers on trackpad or magic mouse, with two or three fingers. And in a few seconds, you should see iPhoto crashes. Same bug applies to iWork or Chrome. If anyone can reproduce this bug, please tell me (and also let me know how to file a bug). On the second note, anyone have problem connecting your magic mouse after waking up? In SL, I open the lid and my mouse would be automatically connected. But in Lion, I have to manually connect every single time.