Bug 106388 Directory dialog is unusably slow
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/IDEWorkbenchPreferencePage.java
implements IWorkbenchPreferencePage {
    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.jface.preference.PreferencePage
     */
    protected Control createContents(Composite parent) {
    	PlatformUI.getWorkbench().getHelpSystem().setHelp(parent,
				IWorkbenchHelpContextIds.WORKBENCH_PREFERENCE_PAGE);