Works great with Chrome 17 on Snow Leopard using my magic mouse, pc mouse with scroll wheel, magic track pad, and keyboard arrows.

The 2 fingered back/forward gestures are instead used for horizontal scrolling (right or down progress further down the page, left or up move back up the page)

Works fine for me on Chrome OSX (17.0.963.79 and Lion 10.7.2 respectively)

Same =(