Bug 312540 [LinkedResources] Copy resource in Navigator and Project Explorer always shows dialog
N20100511-2000. When copying an IFile from one to another folder in the Navigator or Project Explorer, I always get the dialog no matter how I've set the preferences on the 'Linked Resources' page (even if I disable linked resources).
bundles/org.eclipse.ui.navigator.resources/src/org/eclipse/ui/navigator/resources/ResourceDropAdapterAssistant.java
/**
 * 
 * Clients may reference this class in the <b>dropAssistant</b> element of a
 * <b>org.eclipse.ui.navigator.navigatorContent</b> extension point.
 * 
 * <p>
 * Clients may not extend or instantiate this class for any purpose.
 * Clients may have no direct dependencies on the contract of this class.
 * </p>
 * 
 * @since 3.2
 * 
 */
public class ResourceDropAdapterAssistant extends CommonDropAdapterAssistant {
	private static final IResource[] NO_RESOURCES = new IResource[0];
	private RefactoringStatus refactoringStatus;
	private IStatus returnStatus;
	
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.navigator.CommonDropAdapterAssistant#isSupportedType(org.eclipse.swt.dnd.TransferData)
	 */
	public boolean isSupportedType(TransferData aTransferType) {
		return super.isSupportedType(aTransferType)
				|| FileTransfer.getInstance().isSupportedType(aTransferType);
	}
	/*
	 * (non-Javadoc)
	 *