It has finally finished almost an hour when my broadband downloads are very fast.
I have literally just rebooted on my netbook and it is now going through the Stage 1 of 2 - Configuring Service Pack. That isn't particularly fast, but on the netbook 2GB DDR3 RAM Atom n550 1.5Ghz dual core, not much of a surprise there.
Now we are seemingly back on the same stage 1 of 2 after what I thought was windows just about to start, sloooooooow.
Wow, what a palaver (never had this hassle with other SP updates) finally started into my normal windows boot and all appears to be running as it should, avast 6.0.992, MBAM Pro, Outpost Firewall Pro.