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/ProgressMonitorDialog.java
setCancelable(cancelable);
		try {
			aboutToRun();
			
			progressMonitor.forked = fork;
			ModalContext.run(runnable, fork, getProgressMonitor(), getShell()
					.getDisplay());
		} finally {
			finishedRun();
		}
	}
	/**
	 * Returns whether the dialog should be opened before the operation is run.
	 * Defaults to <code>true</code>
	 * 
	 * @return <code>true</code> to open the dialog before run,
	 *         <code>false</code> to only create the dialog, but not open it
	 * @since 3.0
	 */
	public boolean getOpenOnRun() {
		return openOnRun;
	}
	/**
	 * Sets whether the dialog should be opened before the operation is run.
	 * NOTE: Setting this to false and not forking a process may starve any
	 * asyncExec that tries to open the dialog later.
	 * 
	 * @param openOnRun
	 *            <code>true</code> to open the dialog before run,
	 *            <code>false</code> to only create the dialog, but not open