Bug 262906 [http.registry]initializeDelegate in ServletManager.ServletWrapper should be synchronized
AB sent me an email which among things mentions a problem they encountered while load testing. "The servlet's init() methods are called multiple times whenever we make simultaneous requests to the server before they have been initialized." This is indeed a problem as we wrap each servlet that will look after lazily initializing the servlet and the relevant method -- initalizeMethod is not synchronized.
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/NavigatorFilterService.java
synchronized (activeFilters) {
			activeFilters.clear();
			activeFilters.addAll(Arrays.asList(theFilterIds));
		}
	}
	
	public void activateFilterIdsAndUpdateViewer(String[] filterIdsToActivate) {
		boolean updateFilterActivation = false;
		
		StructuredViewer commonViewer = (StructuredViewer) contentService.getViewer();
		
		
		Arrays.sort(filterIdsToActivate);
		
		try {
			commonViewer.getControl().setRedraw(false);
			INavigatorFilterService filterService = contentService
					.getFilterService();
				ICommonFilterDescriptor[] visibleFilterDescriptors = filterService
						.getVisibleFilterDescriptors();
				int indexofFilterIdToBeActivated;
				
				for (int i = 0; i < visibleFilterDescriptors.length
						&& !updateFilterActivation; i++) {
					indexofFilterIdToBeActivated = Arrays.binarySearch(
							filterIdsToActivate, visibleFilterDescriptors[i]
									.getId());
					/*
					 * Either we have a filter that should be active that isn't
					 * XOR a filter that shouldn't be active that is currently