I’ve experienced it on 2 completely different systems, OS’s and providers, and from 2 locations (in other words not from the same IP address).
Location1:
Desktop
Windows Vista Ultimate
IE 8.0.6001
Connecting via Comcast Cable residential service
Location2:
Laptop
Windows Vista Home Premium
IE 8.0.6001
Connecting via T-mobile wireless connect while on the road
The common denominator is that every time I get receive the error - there is a Delta Skymiles banner ad at the top of the page. When other banner ads appear, there is no problem.