i am using a tree with an array collection, i have tried to run busy cursor on expandItem but now i dont know were to stop it when the tree finishes loading children,
found it :)
CursorManager.setBusyCursor() in overridden expandItem
CursorManager.removeBusyCursor(); in update complete...
private function onUpdateComplete(event:FlexEvent):void
{
CursorManager.removeBusyCursor();
}