Not meaning to go OT, but does anyone know if this is true?
If we were talking about page-scraping and HTTP requesting Online Banking websites, that'd be a different story (and questionably legal at best). But like lcuk said, if you're using the service you're using it. There's no more risk by having the data on my desktop of my n900 than there would be of having the data in my SMS inbox, which I'm going to have anyway.