Traditionally, one could could do a double tap, then hold on the second tap to drag a window or to highlight and select onscreen text. In fact, it's probably the single most annoying Lion feature we've found so far. Potentially more annoying is the change from the tap-to-drag trackpad gesture to a new three-finger-drag gesture. The reverse 'natural' scrolling, for example, has its fans and detractors, and we've previously shown you how to roll back that particular change.
The new gesture controls in Apple's OS X Lion operating system update can take a little getting used to on a MacBook (such as the new 11-inch and 13-inch MacBook Airs).
