Alan Dawes wrote:

Are you using the older BT Home Hub version 1 or 2 or 3? Nearly 2 years
ago I was suffering the same thing and BT upgraded me to the Home Hub 4
just for the cost of postage and that has cured the problem.

The latest version 5 would have cost me but that has had some very good
reviews in eg Computer Shopper.

They've moved into the HH6 now, it's the one they base their "strongest
signal" claim on in their helicopter advert.