Can't login in gmod.og with steam

When i try to login it say “Error verifying humanity” 0_o’

Someone can help me? I never had this problem and i use firefox

[editline]04:49PM[/editline]

http://img51.imageshack.us/img51/1456/steamloginbug.jpg

Same thing.

Have you tryed changing your password? Sometimes that works for me if this ever happens. If it still doesn’t work then idk.

Are you skynet?

Me? No.

I meant OP, with the error verifying humanity and all