I have been getting that error message since Wednesday and it's Sunday now. I've emailed about 6 times. The 1st two times I received an auto-responder that says their working on it and should be back with me soon. I haven't even received an auto-responder to the other emails. Guess they don't even bother to send an auto-responder if you write to them more than once or twice. Everyone else that I know is not having problems signing in. Wonder why I can't sign in.... BTW, if you have a problem, and would like an auto-responder message, you can email them at login@facebook.com or info@facebook.com. I tried to call their "tech support" at 650-543-4800, but they wouldn't help me and told me to send an email to info@facebook.com. Hope this helps someone when they are in the same position I'm in.