does anyone else get weird responses to the multitouch features. i think its because im not 100% sure what im doing. for example. when i do the four fingers down, all the apps i have open dont come up. it worked the first day, but now the main window just shifts a little down (itunes and other apps dont come up). and the four finger swipe to the right/left: lets say im on itunes and i want to switch to safari. i 4 finger swipe, click on safari, but nothing happens. is my mac broken or am i just doing something wrong