I have a laptop with an Ubuntu 11.10/Win7 dual boot system. In Windows, I use double-stroke to scroll, which I've got working in Ubuntu as well. This I did by changing the settings under System Settings\Mouse and Touchpad - real easy.
However, in Windows I can also use double-tap as a "middle click" in some contexts - for example, if I double-tap a tab in Chrome, the tab closes; if I double-tap a link, it opens in a new tab. In Ubuntu, double-tap instead behaves like a right-click. On double tap in both the previous examples, a context menu is shown instead of the action I want.
How do I change this configuration in Ubuntu to do what I want and am used to?