Disable two-finger swipe through history in Safari

With OS X Lion, Apple introduced the concept of swiping through your browsing history in Safari (or swiping through pages of a document in preview). Although this is potentially a cool feature, the default way of activating it is a two-finger swipe left or right. This is the same way you scroll left or right on a web page, so I routinely find myself scrolling left on a web page and all of the sudden I have scrolled right off the page and gone back in my history... this is devastating if I am working on a state-dependent page like a form and I lose the data I was filling in.

Here is how to disable the history swipe or change it to a 3 finger gesture:

1. Apple menu > System Preferences... > Trackpad > More Gestures
2. Either uncheck the box next to "Swipe between pages" to disable the feature or use the drop-down menu to change the gesture that activates this feature.