From: "Norman H. Azadian" <norman at azadian dot ch>

> Your assumptions and analysis are spot-on.  I neglected to mention the the 
> problem is "solved" by rebooting the laptop.

Windows does not handle up and down connectivity well at all.  Write a small 
batch file that is only;
Net Stop "DNS Client"
Net Start "DNS Client"

You will be amazed how often, and how fast it fixes DNS problems and "Slow 
Internet" problems...

                        Lee