Curious.It's not an issue anyone else has reported. We've checked the status of your account and you have not been locked out for any reason. So my guess is that it's something to do with your browser. Can you use another browser to see if you have the problem there? I'd normally advise clearing your cache in whatever browser you're using, but you use your history to get to the pages... If I have any other ideas, I'll re-post.
Here's a page that lists alternative browsers:
http://alternativebrowseralliance.com/browsers.html
Bob Ridge-Stearn
Head of e-Learning