talktalk? their modem/routers suck. call them up and have the replacement replaced with something else, its obviously faulty. if you have the stand up white Huawei rubbish then ask for another branded modem/router.
take a look at post #134 and #138 here for views on the huawei >
http://www.cableforum.co.uk/board/12...re-page-9.html