For months, we have been finding a trickle of Web sites which we can't access, Firefox error: "The connection has timed out. The server at ... is taking too long to respond."

Now the number is increasing, and one of the sites I can't access is mission critical, so now it's my job to fix ...

Any other Demon ADSL customers reading? Do you know anything about this problem?

There's a pattern in the some of the IP addresses:

62.233.X.X