Bug 34040 It takes a minute to expand a project in Package explorer
Build: RC1 For scalability testing, I'm developing against WSADIE. I imported a plug-in whose classpath contains >200 external jar entries. The project is initially collpsed. In the package explorer view, if you click on the + to expand the project, it will take about 60 seconds for the project to expand. After it expanded, I went into the view filters and changed it so that I could see the hidden '.*' files, it will take another minute to update the view.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerContentProvider.java
private void postRemove(final Object element) {
		postRunnable(new Runnable() {
			public void run() {
				Control ctrl= fViewer.getControl();
				if (ctrl != null && !ctrl.isDisposed()) {
					fViewer.remove(element);
				}
			}
		});
	}
	
	private void postProjectStateChanged(final Object root) {
		postRunnable(new Runnable() {
			public void run() {
				fPart.projectStateChanged(root);
			}
		});
	}
	private void postRunnable(final Runnable r) {
		Control ctrl= fViewer.getControl();
		final Runnable trackedRunnable= new Runnable() {
			public void run() {
				try {
					r.run();
				} finally {
					removePendingChange();
				}
			}
		};
		if (ctrl != null && !ctrl.isDisposed()) {