I'm using Mail in Lion in three-pane full screen mode. Let's say I put my pointer over a message in the middle pane. I push the touchpad with my thumb to click and hold, and start to move the pointer with my index finger in the direction of the new folder where I want to file the message. Mail does one of two things:
- Begin to highlight a range of messages, or
- Begin to move the selected message to another folder.
I can never tell which one I'm going to get. I almost always want (2), but maddeningly often I get (1). What am I doing to cause the ambiguity? How do I clearly signal my intent to the UI?