Bug 102285 [Import/Export] Project Import wizard unusably slow
R3.1 I wanted to create a new 3.2 workspace and import some projects from my 3.1 development workspace which contains around 120 plug-ins. I've set the root of the importer to point at those plug-ins. After letting the wizard scan my disk for over 10 minutes I gave up and did it manually. A possible source for the problem might be that the root directory (as expected) contains a .metadata directory with tons of data (in my case) and that this one is fully scanned.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEApplication.java
import org.eclipse.core.runtime.IPlatformRunnable;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.osgi.service.datalocation.Location;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PlatformUI;
/**
 * The "main program" for the Eclipse IDE.
 * 
 * @since 3.0
 */
public class IDEApplication implements IPlatformRunnable, IExecutableExtension {
    private static final String METADATA_FOLDER = ".metadata"; 
    private static final String VERSION_FILENAME = "version.ini"; 
    private static final String WORKSPACE_VERSION_KEY = "org.eclipse.core.runtime"; 
    private static final String WORKSPACE_VERSION_VALUE = "1"; 
    private static final String PROP_EXIT_CODE = "eclipse.exitcode"; 
    /**
     * A special return code that will be recognized by the launcher and used to
     * restart the workbench.
     */
    private static final Integer EXIT_RELAUNCH = new Integer(24);
    private static final int MIN_JVM_VERSION_MAJOR = 1;
    private static final int MIN_JVM_VERSION_MINOR = 4;