Bug 51837 [Progress] Bad message in progress dialog
I20040210 I got a bogus message when running a pile of jobs. A progress dialog appeared that read: "The operation cannot proceed because it is blocked by a background" A background what? :)
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/Dialog.java
layout.verticalSpacing = 0;
		composite.setLayout(layout);
		composite.setLayoutData(new GridData(GridData.FILL_BOTH));
		applyDialogFont(composite);
		
		initializeDialogUnits(composite);
		
		dialogArea = createDialogArea(composite);
		buttonBar = createButtonBar(composite);
		return composite;
	}
	/**
	 * Creates and returns the contents of the upper part 
	 * of this dialog (above the button bar).
	 * <p>
	 * The <code>Dialog</code> implementation of this framework method
	 * creates and returns a new <code>Composite</code> with
	 * standard margins and spacing. 
	 * </p>
	 * <p>
	 * The returned control's layout data must be an instance of 
	 * <code>GridData</code>. This method must not modify the parent's layout.
	 * </p>
	 * <p>
	 * Subclasses must override this method but may call <code>super</code>
	 * as in the following example:
	 * </p>	
	 * <pre>
	 * 	Composite composite = (Composite)super.createDialogArea(parent);
	 * 	//add controls to composite as necessary