Bug 60907 Two progress dialogs when building WS + dragging a file into the navigator
build N20040503 - start the workspace - delete a view_menu.gif file from org.eclipse.ui\icons... - note for me that a build starts now - drag another file from the file system while the build is happening - drop it on the folder where the first file was deleted from two progress dialogs appear... see attachment.
bundles/org.eclipse.jface/src/org/eclipse/jface/operation/AccumulatingProgressMonitor.java
private String subTask;
		private double worked;
		private IProgressMonitor monitor;
		
		public Collector(
				String subTask, 
				double work, 
				IProgressMonitor monitor) {
			this.subTask = subTask;
			this.worked = work;
			this.monitor = monitor;
		}
		
		public void worked(double worked) {
			this.worked = this.worked + worked;
		}
		
		public void subTask(String subTask) {
			this.subTask = subTask;
		}