Bug 127519 [Markers] Disabling all filters gives empty list
If you disable (uncheck) the 'Default' filter then the result seems to be that -everything- gets filtered. This seems most unintuitive...I'd think that if I don't have any filters enabled then I should see an 'unfiltered' list.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerAdapter.java
* 
	 * @return CategorySorter
	 */
	public CategorySorter getCategorySorter() {
		return (CategorySorter) view.getViewer().getSorter();
	}
	/**
	 * Build all of the markers in the receiver.
	 * 
	 * @param collector
	 * @param monitor
	 */
	public void buildAllMarkers(IProgressMonitor monitor) {
		building = true;
		MarkerList newMarkers;
		try {
			int markerLimit = view.getMarkerLimit();
			monitor.beginTask(MarkerMessages.MarkerView_19,
					markerLimit == -1 ? 60 : 100);
			try {
				monitor.subTask(MarkerMessages.MarkerView_waiting_on_changes);
				if (monitor.isCanceled())
					return;
				monitor
						.subTask(MarkerMessages.MarkerView_searching_for_markers);
				SubProgressMonitor subMonitor = new SubProgressMonitor(monitor,
						10);
				newMarkers = MarkerList.compute(view.getEnabledFilters(),
						subMonitor, true);
				if (monitor.isCanceled())