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
return ((TableColumn) item).getMoveable();
		} else if (item instanceof TreeColumn) {
			return ((TreeColumn) item).getMoveable();
		}
		return false;
	}
	/**
	 * @param c
	 * @return
	 */
	private boolean getResizable(Item item) {
		if (item instanceof TableColumn) {
			return ((TableColumn) item).getResizable();
		} else if (item instanceof TreeColumn) {
			return ((TreeColumn) item).getResizable();
		}
		return false;
	}
	protected Control createDialogArea(Composite parent) {
		Composite composite = (Composite) super.createDialogArea(parent);
		table = new Table(composite, SWT.BORDER | SWT.SINGLE | SWT.V_SCROLL
				| SWT.H_SCROLL | SWT.FULL_SELECTION /*
													 * | SWT.CHECK
													 */);
		for (int i = 0; i < columnObjects.length; i++) {
			TableItem tableItem = new TableItem(table, SWT.NONE);
			tableItem.setText(columnObjects[i].name);
			tableItem.setData(columnObjects[i]);
		}
		GridDataFactory.defaultsFor(table).span(1, 3).applyTo(table);