I think that's fixed it! Ab's started with no errors and it's loading the shops fine now.
Think it's about time to get some 'real' internet though, I've had nothing but problems with this since I got it. My limit's usually used up within 5 days or so, and I don't even download any programs/music etc.
You can get decent broadband pretty cheap these days, if you've got something like Sky or Virgin Media you can even get it for free.