Hi to all,
I did speak to my ISP and they obviously spoke to Telstra (the Telephone lines people) and although no one has said anything to me, The system is working again. On ws2, the machine with raid6 drives, I have D/L'd Full Monty 2011.4 in 2 hours with no hang ups. That is par for the course.
Thank you all for your help with this problem. Telephone companies have a lot to answer for.