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
returnStatus = null;
				IRunnableWithProgress refactorOp = new IRunnableWithProgress() {
					public void run(IProgressMonitor monitor) {
						try {
							ResourcesPlugin.getWorkspace().run(r, ResourcesPlugin.getWorkspace().getRoot(), IWorkspace.AVOID_UPDATE, monitor);
						} catch (CoreException ex) {
							returnStatus = WorkbenchNavigatorPlugin.createErrorStatus(0, ex.getLocalizedMessage(), ex);
						}
					}
				};
				
				if (returnStatus != null)
					return returnStatus;
				
				try {
					PlatformUI.getWorkbench().getProgressService().run(false, false, refactorOp);
				} catch (InterruptedException e) {
					return Status.CANCEL_STATUS;
				} catch (InvocationTargetException e) {
					return WorkbenchNavigatorPlugin.createErrorStatus(0, e.getLocalizedMessage(), e);
				}
			} catch (CoreException ex) {
				return WorkbenchNavigatorPlugin.createErrorStatus(0, ex.getLocalizedMessage(), ex);
			} catch (OperationCanceledException e) {
			}
		}
		return problems;
	}
	/**
	 * Performs a drop using the FileTransfer transfer type.