Vista is now working normally, according to the Hosting and Support Team. They have and I have run a couple of tests on section creation, and it is back to normal responsiveness.
They still need to provide me with reasons for the problems that were occurring. So far, no one has suggested that it was the number of students or any other user activity. I know there has been some speculation on this today, and I am sure we are all wondering what is causing this. It is natural to fill in the blanks when no one is providing a complete answer yet. One of the nodes in particular was so unresponsive, they had to power it down and bring it back up. As to causes, we are still waiting for them to determine that. Let me know if there are any further issues.