Hello, I am brand new to this site and am just looking for some help on fixing my current problem. When i swipe four fingers down on the trackpad to show everything i have open it doesnt work. When i try to swipe four fingers up to get to my desktop it doesnt work. When i try to go back a page in safari by swiping three fingers to the left it wont go back. But when i use two fingers to scroll up and down pages that works just fine. I havent taken it to an apple store due to I am stuck at college and there isnt one around. I would really like to know if i can fix this problem on my own or if i have to bring it in. Thanks for looking, and i hope you can help.