I have a new 13" MBA, I upgraded to 10.10 Yosemite recently. I use Chrome for a browser, updated to 38.0.2125.122 recently. Swiping the trackpad to the left with 2 fingers would take me Back one page in the browsers history. Swiping to the right with two fingers would sometimes take me Forward in the browsers history, but often it wouldn't work. Now, neither Forward or Back work. I checked the settings and "Swipe Between Pages" is set for two fingers left and right, just like it was at the beginning. All the other gestures work fine. Anyone have any ideas why it's not working?