hmm, my webmail is working fine now, must have been a local issue for me - I've been doing a proxy dance for some time now
If you are still having problems, you shuould call tech support to see if somethign has changed on your account. It is possible that, if you are no longer an ntl use (I think that is what you are saying in your post?) still accessing an ntl email, that the account has been closed through lenght of time after your leaving?