So, I have a penryn multitouch macbook pro and the three finger swipe randomly stopped working. I've had other problems with the laptop that have lead me to do a fresh reinstall of leopard (not an archive&install but erase and install). The three finger swipe worked the first few weeks, but randomly stopped working, and still doesn't work after the erase and install? The install is from the CD that came with the macbook pro which i bought at the apple store. I went to the prefs pane for trackpad, and there is no checkbox next to "three finger swipe" so im assuming its turned on automatically? Any suggestions to get it working? Thanks!