ive noticed since i upgraded to ML the gestures on my trackpad don't work anymore. example, 3 finger and thumb pinch used to bring up launch pad, the 2 finger swipe doesnt bring up notifications, four finger swipe left or up doesn't bring up mission control etc. none of them are working?!?! ive checked trackpad settings and they are all ticked. is there another setting to enable them?...if so, thats just silly..but anyway...any ideas?