Hi all, my macbook aluminum seems to be very weird. It recognises all the other gestures (two fingers, click, tap, drag-lock, etc) but i can not drag it the way i did before =( so when i drag like pretending there is a button on my trackpad, the item got released very easily! I don't know why this is happening! If it isn't clear, i'll post a video later. I have done all the updates, the trackpad update and performance update and 10.6.2 update. I don't know how to fix it!