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/wizards/datatransfer/WizardProjectsImportPage.java
return null;
		try {
			return new ZipFile(fileName);
		} catch (ZipException e) {
			displayErrorDialog(DataTransferMessages.ZipImport_badFormat);
		} catch (IOException e) {
			displayErrorDialog(DataTransferMessages.ZipImport_couldNotRead);
		}
		archivePathField.setFocus();
		return null;
	}
	/**
	 * Answer a handle to the zip file currently specified as being the source.
	 * Return null if this file does not exist or is not of valid format.
	 */
	protected TarFile getSpecifiedTarSourceFile() {
		return getSpecifiedTarSourceFile(archivePathField.getText());
	}
	/**
	 * Answer a handle to the zip file currently specified as being the source.
	 * Return null if this file does not exist or is not of valid format.
	 */
	private TarFile getSpecifiedTarSourceFile(String fileName) {
		if (fileName.length() == 0)
			return null;
		try {
			return new TarFile(fileName);
		} catch (TarException e) {
			displayErrorDialog(DataTransferMessages.TarImport_badFormat);
		} catch (IOException e) {