It may be that Blackboard isn't so bad from the student side, but it's terrible from the faculty side. This afternoon I was trying to create a quiz and Blackboard locked up before I was halfway done. A couple days ago the same thing happened to me inside the grade center.
BTW, who thought the new grade center would be an improvement over the old gradebook? It's harder to use, and very cumbersome. Almost anything a faculty member does causes a page reload while some slow script somewhere runs. Lovely.