BB has made some configuration changes to their firewall that have speeded access to Vista up significantly. They are also planning some hardware changes around midnight our time that shouldn't cause us to be offline, but that may cause some slower response times for an hour or so. Once those are in place BB's expectations are that network response times should be back to normal for tomorrow.
That said, tomorrow is still the second day of classes for us and for many of the colleges, so don't expect to see incredible jet-like speeds tomorrow. We had emailed all of our students and suggested they wait until tomorrow to log in if they were experiencing lengthy delays today. That will of course increase the load tomorrow.
We will update you on the results of this evening's configuration changes and tonight's hardware changes tomorrow. FWIW though, I was in doing some grading this evening and things are looking up just now.