Bug 136921 [IDE] New File dialog locks for 20 seconds
I have fairly large workspace (many thousands files in 150+ projects). Whenever I try to create a new file, "New File" dialog stays locked for 15-20 seconds before I can start typing file name. CPU utilization is 100% during this time. Eclipse 3.2 I20060331-2000, WinXP SP2, tried with both IBM Java 1.5.0 SR1 and SUN 1.5.0_05.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/misc/ContainerSelectionGroup.java
*  name instead of just selecting from the existing ones.
     * @param message The text to present to the user.
     * @param showClosedProjects Whether or not to show closed projects.
     * @param heightHint height hint for the drill down composite
     */
    public ContainerSelectionGroup(Composite parent, Listener listener,
            boolean allowNewContainerName, String message,
            boolean showClosedProjects, int heightHint, int widthHint) {
        super(parent, SWT.NONE);
        this.listener = listener;
        this.allowNewContainerName = allowNewContainerName;
        this.showClosedProjects = showClosedProjects;
        if (message != null) {
			createContents(message, heightHint, widthHint);
		} else if (allowNewContainerName) {
			createContents(DEFAULT_MSG_NEW_ALLOWED, heightHint, widthHint);
		} else {
			createContents(DEFAULT_MSG_SELECT_ONLY, heightHint, widthHint);
		}
    }
    /**
     * The container selection has changed in the
     * tree view. Update the container name field
     * value and notify all listeners.
     */
    public void containerSelectionChanged(IContainer container) {
        selectedContainer = container;
        if (allowNewContainerName) {
            if (container == null) {
				containerNameField.setText("");