The explanation from O is that they are not facilitating access via Explorer 9, to which I'd switched and about which I'm not thrilled. No notice from O not to switch, which I didn't do right away. I might switch back if I can. Any views on Explorer 9 or about other brokers being picky? It shouldn't have started over a weekend based on when I switched, but then I don't visit O daily since it is a pain.