Q. How to move launchers along the panel - to space them out?

I'm just setting up a user account on a fresh install of 12.04.1
with Gnome classic. In the top panel, Commonly used apps are added, by dragging a launcher up to the panel (as per the old "add to panel" method). They are present, but are crammed next to the menu, and crammed next to each other. To me it looks messy and could be easier to use.

In 11.04, I could move the launchers freely across the panel bar. Does anyone know how to do this in 12.04?