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
if (!allSourceAreLinksOrVirtualFolders) {
				ImportTypeDialog dialog = new ImportTypeDialog(getShell(), dropAdapter.getCurrentOperation(), sources, target);
				dialog.setResource(target);
				if (dialog.open() == Window.OK) {
					if (dialog.getSelection() == ImportTypeDialog.IMPORT_VIRTUAL_FOLDERS_AND_LINKS)
						operation.setVirtualFolders(true);
					if (dialog.getSelection() == ImportTypeDialog.IMPORT_LINK)
						operation.setCreateLinks(true);
					if (dialog.getVariable() != null)
						operation.setRelativeVariable(dialog.getVariable());
					operation.copyResources(sources, target);
				} else
					return problems;
			} else
				operation.copyResources(sources, target);
		}
		return problems;
	}
	/**
	 * Performs a resource move
	 */
	private IStatus performResourceMove(CommonDropAdapter dropAdapter,
			IResource[] sources) {
		MultiStatus problems = new MultiStatus(PlatformUI.PLUGIN_ID, 1,
				WorkbenchNavigatorMessages.DropAdapter_problemsMoving, null);
		mergeStatus(problems, validateTarget(dropAdapter.getCurrentTarget(), dropAdapter.getCurrentTransfer(),
				dropAdapter.getCurrentOperation()));
		IContainer target = getActualTarget((IResource) dropAdapter.getCurrentTarget());
		boolean shouldLinkAutomatically = false;
		if (target.isVirtual()) {