Bug 136101 [Markers] ProblemsView constantly busy when empty
20060412 The problems view is constantly busy when there are no entries - the tab goes italic all of the time.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerAdapter.java
class MarkerCategory extends MarkerNode {
		MarkerAdapter markerAdapter;
		int start;
		int end;
		private ConcreteMarker[] children;
		private String name;
		/**
		 * Create a new instance of the receiver that has the markers between
		 * startIndex and endIndex showing.
		 * 
		 * @param adapter