WTF LJ?

I can't log in to LJ.  The login page accepts my password, but no other pages on the site recognize me as logged in -- they display me as a non-logged-in user.  Clearing my browser cookies doesn't help -- I can log in again but have the same problems.  I am posting this with my client, I posted a locked entry earlier that seemed to go through, though I can't see it because I'm not logged in.  If anyone can explain what might be wrong, let me know.  If it's still broken tomorrow I will try dealing with LJ support but I'm tired and just going to sleep now.