So many know Facebook has been down most of the day and still is for most people. Try using Mozilla Firefox and enter http://www.facebook.com/inbox. That should take you past the road block. The reason this is a question is because I need to know if it works for everyone. So answer here after you've tried.
Problems getting on Facebook, read this please.?
How did you figure this out? I was on facebook this morning at exactly 10 am, and then it timed out and said they were upgrading. Everytime I have tried again all day, same message. So I tried your inbox trick, and it said "you must logon to view this page" so I did, and I'm in!
Reply:Not working with firefox. I get the same message in firefox as I do in explorer.