I have just started with Maya and I'm going through the tutorials, and it tells me to select a vertex loop by selecting one vertex and then shift double-clicking another vertex. This is supposed to select all vertexes between the two, but it doesn't - it only selects the vertex I just double clicked on (as well as the previously selected vertex).

Is there something I am doing wrong or is the tutorial out of date and the hotkey just changed?

EDIT: I guess I should have put this in the basics/newbie forum, sorry