And really is an unnecessary amount of fuss. Like everything else in life online banking has some risks attached. I don't think the risk of using a window machine here for banking are esp great.
I'd be interested in knowing home many people have suffered from someone gaining access to their bank account from a keylogger or some other such malware (phishing is something else, as that has nothing to do with the platform).
I know people who have had cards cloned etc. through using them in a bricks and mortar place. I know of people who have had their details compromised via using an online shop (we think). I don't know of anyone whose bank account directly has been compromised (though I'm sure it has happened)