I've been having problems off and on for a couple of days. Got on there fine this morning, but had to reload several times before it let me update my status. I think they must be having some problems on their end.
The local newspaper here reported yesterday on Twitter that they had just lost a computer to a virus that's on Facebook right now. Apparently there's one that comes in a message that appears to be from a friend. The virus is in a link or something in the message - the paper said not to download it. Maybe Facebook is trying to deal with the virus and that's contributing to the problems.