Bug 229084 [About] up/down buttons don't enable for About->Plug-in Details->Columns
The Columns dialog in About->Plug-in Details->Columns has an up and a down button. They don't enable when a list item is selected.
bundles/org.eclipse.jface/src/org/eclipse/jface/internal/ConfigureColumnsDialog.java
upButton = new Button(composite, SWT.PUSH);
		upButton.setText(JFaceResources.getString("ConfigureColumnsDialog_up")); 
		upButton.addListener(SWT.Selection, new Listener() {
			public void handleEvent(Event event) {
				handleMove(table, true);
			}
		});
		setButtonLayoutData(upButton);
		downButton = new Button(composite, SWT.PUSH);
		downButton.setText(JFaceResources
				.getString("ConfigureColumnsDialog_down")); 
		downButton.addListener(SWT.Selection, new Listener() {
			public void handleEvent(Event event) {
				handleMove(table, false);
			}
		});
		setButtonLayoutData(downButton);
		createLabel(composite, ""); 
		Composite widthComposite = new Composite(composite, SWT.NONE);
		createLabel(widthComposite, JFaceResources
				.getString("ConfigureColumnsDialog_WidthOfSelectedColumn")); 
		text = new Text(widthComposite, SWT.SINGLE | SWT.BORDER);
		text.setText(Integer.toString(columnObjects[0].width));
		GridLayoutFactory.fillDefaults().numColumns(2).applyTo(widthComposite);
		GridDataFactory.defaultsFor(widthComposite).grab(false, false).span(2, 1).applyTo(
				widthComposite);
		GridLayoutFactory.swtDefaults().numColumns(2).applyTo(composite);
		table.setSelection(0);
		handleSelectionChanged(0);
		table.addListener(SWT.Selection, new Listener() {