As you can tell, we are having real problems wih these update issues, so the more information we have, the better.
So, please send in log files, along with any other information you think may be helpful. Hopefully it will help us get to the bottom of it. The main problem is that none of our computers have problems (or we would have fixed them) – it's difficult to know what is happening with another computer that can be thousands of miles away. There is also more than one failure mechanism, so what works in one place does not work in another.
A few tips in the meantime:
1) disconnect ALL other USB devices.
2) stop ALL other applications. Especially, do not Web browse or send/receive email.