Look what happens when you try to log on to Nationwide twice without closing your browser in between times:

How rude! No, you may not close my browser!

*sigh* i guess we have the influence of Microsoft to thank for this kind of intrusion dressed up as helpfulness. We recently had to get a Vista machine for testing purposes at work, and literally every other click results in a stupid popup box offering to do something for us. It's ever more noticeable because of Vista's awful flip in - flip out dialog boxes which just look like such a failed attempt at a modern visual interface. Good visual effects should be sensed, but not noticed, in my opinion. Vista has got it so terribly wrong - it's just annoying is what it is.