@Ashover: Well, you got a repsonse at least :/ Pity you have to go to such lengths to get anything done. Being a bit bored last night I tried uploading some files, it took me 1.5 hours to upload seven files of about 500k each to my Yahoo Briefcase
@pastaman: I think that solution is only for e-mail and will still be subject to network errors (which is the problem here) between your PC, NTL and whoever is providing the SMTP AUTH service, so you will still hit upload problems with large e-mail attachments until NTL fix their network.