Comment 1 for bug 1275016

Note: when one sweitches between applications there is a brief spike in processor usage for wingpanel. However, the RAM usage of wingpanel only grows up from 10M if one keeps clicking on the menus/submenus - i.e. File>submenus, Edit->submenus, and all the other ones too. Where one ends up with wingpanel being ~40M of unflushed (cached menus?) stuff.