I know this sounds weird. Really weird. But I've been scratching around for help, and someone suggested that wordpress could be screwing up my browsers.
OK. I said it was weird.
We have 3 Macs sharing an internet connection. Suddenly one of them can't get to a couple of websites, while the other two can. Via that one machine we've got a wordpress.com hosted blog. Try to get the the bbc news site or another news site - we get directed to a domain parking site. In Firefox and Safari. Only on the one machine.
I said it was weird, but worth a try, I'm stumped! Something about my lookupID being messed up?????